Author Archives: Chris Cunningham

The Black-necked Stilt Courtship Ritual

Courtship consists in a number of quiet attentions, not so pointed as to alarm, nor so vague as not to be understood.—Laurence Sterne

Lafitte’s cove is often thought of as a mecca for migrant songbirds, but it’s usually a good idea to check the margins of the lakes for shorebird and wader activity. On one recent visit (4/16), we were lucky to see the courtship ritual of the Black-necked Stilt. Although similar to that of the closely related American Avocet (which we have documented previously), the Black-necked Stilt ritual encompasses a number of different, albeit equally charming, behaviors.

The male first approaches a female that has signaled her readiness by adopting a horizontal posture. The male nods.

Black-necked Stilt 1, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 1: The Nod, Lafitte’s Cove, Galveston Island, Texas. The ritual proceeds with a nod to the presenting female. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). High-speed synchronized fill-flash.

He then stirs the water with his beak . . . .

Black-necked Stilts 2, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 2: Look what I can do! Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

The male strolls to the female’s other side . . . .

Black-necked Stilts 3, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 3: The Stroll, Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Here, he again stirs up the water with his beak . . . .

Black-necked Stilt 4, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 4: Look what I can do (again)! Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). High-speed-synchronized fill-flash.

The male then mounts the female and consummates the relationship . . . .

Black-necked Stilt 5, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 5: The Act, Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). High-speed synchronized fill-flash.

After copulation, the male descends. He then places his wing over her body and crosses his bill over hers . . . .

Black-necked Stilts 6, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 6: Crossed Beaks, Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). High-speed synchronized fill-flash.

The pair then promenades together for a few paces. They are now together . . . for at least this breeding season.

Black-necked Stilts 7, Lafitte's Cove, Galveston Island, Texas
Black-necked Stilts 7: Begin Promenade, Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4xTC). High-speed synchronized fill-flash.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Still Waiting to See Neotropical Migrant Songbirds . . . .

Nothing happens. Nobody comes, nobody goes. It’s awful.—Samuel Beckett, Waiting for Godot

Swimming diamondback water snake, Fiorenza Park, Houston, Texas
Swimming Diamondback Water Snake, Fiorenza Park, Houston, Texas. No birds means looking for other subjects. This snake was living dangerously: The water at Fiorenza is filled with fishing cormorants. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). High-speed synchronized fill-flash.

Last week we didn’t see many Neotropical migrant songbirds. The weather was incredible . . . but maybe that was the problem. With crystal clear skies and a consistent wind out of the south, i.e. a tailwind, the trans-Gulf migrants may have simply blown past the Coast and the usual migrant traps. What’s good for birds, is bad for birders.

What’s more, dry weather means that there haven’t been many arthropods around other than caterpillars and a few flies, mosquitos, dragonflies, and spiders. So there really hasn’t been much of a reason for birds to stop if exhaustion or thirst wasn’t a problem. At Lafitte’s Cove on 4/8 I saw a few Ruby-throated Hummingbirds and one vireo or warbler (I saw only a creamy yellow underside through the canopy)—a terrible showing for April at a Gulf Coast migrant trap.

Some stormy weather moved into the Gulf Coast throughout this week. On Tuesday (4/11), for example, a major front swept down mid-day and looked the perfect set-up for a fallout. Sadly, I watched the atmospherics on radar from work, trapped and unable to get into the field. But yesterday (4/14) was also bad at Lafitte’s Cove. I only saw a few hummers, a Black and White Warbler, a Hooded Warbler, a Bronze-headed Cowbird, and a White-eyed Vireo. In addition to these, Elisa saw two Tennessee Warblers. Not great.

In any case, hope springs eternal, and we’ll give the Coast the old college try again this weekend! One of these days . . . .

Dabbling Mottled Drakes, Lafitte's Cove, Galveston Island, Texas
Dabbling Mottled Drakes, Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). No migrant songbirds around? Just photograph some resident ducks! High-speed synchronized fill-flash.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Spring: The Old and New

Birds’ love and birds’ song
Flying here and there . . . . Spring, Alfred Lord Tennyson

Common Yellowthroat, Pilant Lake, BBSP, Texas
Female Common Yellowthroat on Dead Vegetation, Pilant Lake, Brazos Bend State Park, Texas. Common Yellowthroats are among the most common warblers in North America. They winter primarily in Mexico and Central America and breed across the United States. They can be found year-round along the Texas Gulf Coast. The south side of Pilant Lake is a great place to see them picking bugs from emergent vegetation (alive or dead). Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

As of this writing, we are still waiting to see a significant number of migrant songbirds and shorebirds. We are, however, watching spring unfold in other ways. New growth is sprouting up across the landscape, and will soon overwhelm the dead plant life of the previous growing season.

Portrait young Reddish Egret, East Beach, Galveston Island, Texas
Resident: Young Reddish Egret (White Morph), East Beach, Galveston Island, Texas. This bird was taking killifish from small tidal channels. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Flashes of wildflower-color can be seen scattered around. Insect life is starting to awaken—although, mercifully, the mosquitos have been strangely modest in number.

Everywhere caterpillars can be seen crawling around, and everywhere birds are gobbling them up! If the birds had their way, there would be no moths or butterflies!

Loggerhead Shrike wiht Caterpillar, Lafitte's Cove, Galveston Island, Texas
Loggerhead Shrike with Caterpillar, Lafitte’s Cove, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

On our last visit to Lafitte’s Cove—despite being in April–we saw no wood warblers (or any other migrant songbirds for that matter) at all. A lone Brown Thrasher called from the thicket. Disappointed, we headed over to East Beach . . . .

Here, we saw a few migratory shorebirds. Dunlins and Western Sandpipers were around and beginning to transition into breeding colors. Snowy and Wilson’s Plovers (and Killdeer) were scooting around along tidal channels and on the supratidal flats. One of these days, one of these days . . . the mottes and beaches are going to throng with avian life. Here’s to being there when it happens!

Wilson's Plover, East Beach, Galveston Island, Texas
Female Wilson’s Plover, East Beach, Galveston Island, Texas. Breeding Wilson’s Plovers begin arriving along the Texas coast in mid-February and depart by September. They nest on simple scrapes on beaches, among other places, from April to June. Note the new growth sprouting up from among dead old-growth. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Catching Birds in Action

Many great actions are committed in small struggles. –Victor Hugo

A Great Egret Shades its Young, Smith Oaks, High Island, Texas
A Great Egret Shades its Young, Smith Oaks, High Island, Texas. Even in March, the brutal Texas sun can kill delicate nestlings. Mom (or dad) to the rescue! Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

As I write this, we stand on the cusp of the best month of birding on the calendar! But for the past few weeks we’ve been (mostly) photographing our more typical species (year-’rounds, wintering or summering species) going about their business, not transients flying through from somewhere to somewhere else.

Singing Male Red-winged Blackbird, Pilant Lake, Brazos Bend State Park, Texas
Singing Male Red-winged Blackbird on Rice Plant, Pilant Lake, Brazos Bend State Park, Texas. The margins of Pilant Lake were filled with Red-winged Blackbirds (and their calls) on our last visit. What a nice change: The marsh sounds as it should. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

One of the more pleasant surprises of the past few weeks is the recognition that Brazos Bend State Park (BBSP) is starting to rebound a bit from the catastrophic floods of the recent past. It is still nowhere near the mecca for observing wader action that it was before, but day by day things are improving. It will be interesting to see if songbirds return for nesting in a big way. Elisa spotted a female Northern Cardinal building a nest just above water-line on Pilant Slough, and the trilling songs of Northern Parulas are everywhere. Can Prothonotary Warblers be far behind?

The Flip, Fiorenza park, Houston, Texas
The Flip, Fiorenza park, Houston, Texas. The catfish hunt goes on! This juvenile Neotropic Cormorant is attempting to maneuver a spiny armored catfish into swallowing position. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.
White Ibis in Breeding with Beak-full of Invertebrates, Pilant Slough, Brazos Bend State Park, Texas
White Ibis in Breeding with Beak Full of Arthropods, Pilant Slough, Brazos Bend State Park, Texas. This bird has (at least) a spider, a water bug, and a metallic bronze damselfly in its beak at the same time. Water hyacinth is a nasty invasive, but it’s full of nutritious bugs! Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

As noted, wader action at BBSP is still a bit down from the best of times, but the patient observer can still see a few things occasionally. Especially prominent now are the American Bitterns. Bitterns can be seen hunting all over BBSP. On our last visit, we observed one confrontation between two birds on Pilant Slough. Soon calling and confrontations should be common, only to die away by May.

In any case, starting today, we’ll shy away from BBSP for a few weeks and visit Galveston more. Hundreds of millions of songbirds have started streaming across the Gulf of Mexico, and we’re not going to miss it! With luck, we’ll capture some of these birds in action  . . . Sipping from a flower, here, or grabbing a dragonfly, there. Can’t wait!

American Bittern with Crawfish, 40-Acre Lake, Brazos Bend State park, Texas
American Bittern with Crawfish, 40-Acre Lake, Brazos Bend State Park, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.
Looking American Bittern, 40-Acre Lake, Brazos Bend State Park, Texas
Looking American Bittern, 40-Acre Lake, Brazos Bend State Park, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Spring Begins at Smith Oaks

A light exists in spring
Not present on the year
At any other period.
When March is scarcely here . . . .

—Emily Dickinson, A Light Exists in Spring

Roseate Spoonbill in Flight, Smith Oaks Rookery, High Island, Texas
Roseate Spoonbill in Flight, Smith Oaks Rookery, High Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

In our travels last week, we stopped by Smith Oaks on High Island, Texas, one of the most famous birding sites on the Texas Gulf Coast. Although we saw no early migrant songbirds in the surrounding woods, the rookery was hopping with activity—the drive toward life.

Nest-sitting Neotropic Cormorants, Smith Oaks Rookery, High Island, Texas
Nest-sitting Neotropic Cormorants, Smith Oaks Rookery, High Island, Texas. Note that the nest is stained white with guano. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Spoonbills, egrets, and cormorants filled the air. Great Egrets and Neotropic Cormorants shuttled back and forth with nest-building materials. Double-crested Cormorants fished in the water surrounding the rookery. Some Great Egret pairs were building nests, sitting on eggs, or rearing chicks. Neotropic Cormorants were nest-sitting, but no chicks were to be seen. A few energetic Tricolored Herons swooped past but gave no indication of intentions. Spoonbills squabbled with each other: Nesting can’t be far behind!

Snowy Egrets in High Breeding, Smith Oaks Rookery, High Island, Texas
Snowy Egrets in High Breeding, Smith Oaks Rookery, High Island, Texas. In high breeding color, Snowy Egrets have pink lores and feet. Canon EOS 7DII/600mm f/4 L IS (+1.4x TC). Natural light.
Nest-building Great Egrets, Smith Oaks Rookery, High Island, Texas
Nest-building Great Egrets, Smith Oaks Rookery, High Island, Texas. Nest building is a team effort for Great Egrets. Note the fluorescent green lores of high breeding color. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Great and Snowy Egrets in glorious breeding plumes (that almost doomed these species to extinction in the Gilded Age) with lores ablaze in electric colors were everywhere and revved up on hormones. Soon, the later-breeding species, Cattle Egrets, Tricolored Herons, and Roseate Spoonbills, will join the frenzy. By that time, the trees will be filled with brilliant flashes of Neotropical migrant songbird plumage and the picture of spring will be complete . . . .

Great Egret feeding young, Smith Oaks Rookery, High Island, Texas
Great Egret Feeding Young, Smith Oaks Rookery, High Island, Texas. A regurgitated crawfish is being presented to the nestlings. Three nestlings are visible in this image, but a fourth smaller one is also present. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

But, as always, predators lurk in the dark water below waiting for larger nestlings to oust smaller, weaker ones, or for birds of any age to simply make a mistake . . . .

Death Stalks the Rookery, Smith Oaks Rookery, High Island, Texas
Death Stalks the Rookery, Smith Oaks Rookery, High Island, Texas. Despite the beauty, have no illusions: Nature is red in tooth and claw . . . always. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

For life and death are one, even as the river and the sea are one.–Khalil Gibran

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Common Loons: Into Breeding Plumage

What we achieve inwardly will change outer reality. –Plutarch

Common Loon in Pin Feathers, Offatt's Bayou, Galveston island, Texas
Common Loon in Pin Feathers, Offatt’s Bayou, Galveston island, Texas. The tips of the pin feathers on the neck and head are pigmented black. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.
Common Loon in Pin Feathers, Offatt's Bayou, Galveston Island, Texas
Common Loon in Pin Feathers 2, Offatt’s Bayou, Galveston Island, Texas. This is the same bird as above. Note the shagginess of the pin feathers on head and neck. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

This week on Galveston, Common Loons could be seen in many stages of transitional plumage. Every bird looked slightly different. All the birds I saw had some degree of spotting on the wings, and so lacked the brown, scalloped pattern of nonbreeding wing plumage. I saw one bird with a shaggy mane of pin feathers (Thanks to S.M. for pointing out this bird!) and one bird in almost complete breeding colors—only a stray feather here or there needed to be pigmented.

Common Loon, Offatt's Bayou, Galveston Island, Texas
Common Loon in Transitional Plumage, Offatt’s Bayou, Galveston Island, Texas. This bird appears to be in nonbreeding plumage from the neck forward. Spots on the wings show the transition to breeding colors has begun, though. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.
Common Loon, Offatt's Bayou, Galveston Island, Texas
Another Common Loon in Transitional Plumage, Offatt’s Bayou, Galveston Island, Texas. This bird is a little further along than the one immediately above. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Many birds were engaged in hunting behavior much of the time. I saw fish, crabs, and a single mantis shrimp (Squilla empusa) being taken. This is clearly the time of year to be gorging and fattening up. It’s a long way back to Canada and environs for the breeding season! A good deal of preening was also going on, likely related to molting and keeping feathers in shape for the big trip ahead. Two birds had already pair-bonded and spent a significant amount of time together–another reminder that breeding in birds is often a process that unfolds in many stages over much of the year.

Common Loon in (Nearly) Breeding Colors, Offatt's Bayou, Galveston Island, Texas
Common Loon in Breeding Colors (Nearly), Offatt’s Bayou, Galveston Island, Texas. This bird was more shy than many others and had apparently already pair-bonded. Another bird in less well-developed transitional plumage kept appearing in close proximity. Could shyness toward humans and pair-bonding behaviors be related? Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Grebes: Unique Foot-propelled Divers

Feet, what do I need you for when I have wings to fly?—Frida Kahlo

Eared Grebe, Offatt's Bayou, Galveston Island, Texas
Portrait: Eared Grebe, Offatt’s Bayou, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Among extant birds, grebes have a unique method of foot propulsion. There are other foot-propelled divers, loons, for example, but these birds have significant webbing between the toes. The birds with webbed toes push themselves forward against the drag force of water. Grebes, on the other hand, have separate toes with stiff, collapsible asymmetrical lobes on each side. The lobes on the inside are larger than those on the outside. Grebes are also unusual in that their relatively short femora (thigh bones) are oriented perpendicular to the long axis of the body, and the toes beat along a complex dorso-lateral to ventro-medial path, rather than parallel to the direction of the body’s forward motion.

Diving Eared Grebe, Offatt's Bayou, Galveston Island, Texas
Diving Eared Grebe, Offatt’s Bayou, Galveston Island, Texas. Although grebes have a unique method of foot-propulsion, they look like many other submarine hunters (e.g., loons, mergansers, cormorants) from above the water as they dive after prey. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

The traditional interpretation of how grebes paddled through the water, and the one I was taught, is that the lobes of the toes would unfold during then power stroke to provide maximum drag to push against, and fold up to reduce drag on the the recovery stroke. A more recent interpretation is that the grebe foot acts like a (slotted) hydrofoil and provides a lift force that propels the bird forward from behind (Johansson and Norberg, 2001)–physically similar to the way in which a wing allows a bird or airplane to fly. The lift hypothesis has an immediate visceral appeal to me given the asymmetrical lobes of the toes—like the vanes of a flight feather. Lift is usually explained by elementary physics textbooks as the result of the Bernoulli principle, essentially the conservation of energy for a moving fluid. This explanation is not correct quantitatively. The true explanation likely involves the most terrifying of all physics concepts . . . turbulence . . . . 

Diving Eared Grebe, Offatt's Bayou, Galveston Island, Texas
Diving Eared Grebe 2, Offatt’s Bayou, Galveston Island, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

As a photographer on the surface, I haven’t been able to document the strange way in which grebes move through the water. Once and a while, when conditions were right, I have been treated to a glimpse of the legs in motion as in the image below. Swimming with grebes is one more activity to add to an already lengthy bucket list.

I mentioned at the opening that grebes were unique among extant birds. Hesperornithiformes, a group of toothed Cretaceous foot-propelled diving birds, are thought to have had a method of propulsion similar to grebes and to have possessed asymmetrically lobed individual toes. On a recent visit to the New Mexico Museum of Natural History in Albuquerque, I had the opportunity to study the feet of a life-sized model of Hesperornis regalis, the largest of these Cretaceous divers from the Kansas Chalk Sea. Reading the label . . . sure enough, reconstruction supervised by Dr. L. D. Martin, my late (paleo)ornithology professor, a gifted teacher with so many fascinating stories to tell about the lives of birds. . . .

Diving Eared Grebe, Offatt's Bayou, Galveston Island, Texas
Diving Eared Grebe 3, Offatt’s Bayou, Galveston Island, Texas. Offatt’s Bayou is a great place to see Eared Grebes hunting in winter. Texas City Dike is another. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

While grebe-watching, I am always interested in seeing these birds return to the surface with prey. In my experience along the Gulf Coast, Eared Grebes rarely return to the surface with prey. After dozens of dives, I have seen only one small fish clamped in a beak. This means that grebes are either remarkably unsuccessful hunters (unlikely), or that they can swallow small prey underwater (likely). Pied-billed and Least Grebes can be seen with large prey on the surface like fish, crawfish, frogs, and dragonflies. Perhaps small prey may be easily swallowed in the submarine realm, whereas large prey items may need to be manipulated into an ideal orientation in the air. In any case, grebes are certainly among the most interesting subjects for study and observation. Elisa doesn’t have to ask me twice to go grebe-watching!

Pied-billed Grebe withCrawfish, Elm Lake, Brazos Bend State Park, Texas
Juvenile Pied-billed Grebe with Crawfish, Elm Lake, Brazos Bend State Park, Texas. In the past, Brazos Bend SP was great place to see Pied-billed Grebes hunting year-round. Recent flooding has decimated the ecology of the park, and water birds are no longer abundant. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

Reference

Johansson, L.C., and Norberg, U. M. L. Norberg. 2001. Lift-based Paddling in Diving Grebe. The Journal of Experimental Biology 204: 1687-1696.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

 

Birds in “Good” and “Bad” Light

There is nothing either good or bad but thinking makes it so. –William Shakespeare

Double-crested Cormorant with Plecostomus, Fiorenza Park, Houston
Double-crested Cormorant with “Plecostomus,” Fiorenza Park, Houston, Texas. We Texans may be horrified by the proliferation of these South American armored catfish in our waters, but to cormorants that range far to the south, it still feels like home when they’re around. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

l know there is a great diversity of opinion on this subject, but my favorite kind of Texas photo-birding day is the day after a strong blue norther. The howling winds have died down, and the 40º sky is clear, but for a thin haze of cirrus clouds. This kind of day has been in very short supply for several years now.

Neotropic Cormorant with Plecostomus, Fiorenza Park, Houston, Texas
Eye to Eye: Neotropic Cormorant with “Plecostomus,” Fiorenza Park, Houston, Texas. In this shot, the sun was in the wrong position (or rather I was), leading to too much glare from the water and a backlit bird. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Lately the weather has been wildly variable, with clear, cold days rare. This has meant having to make the most of a wide variety of lighting situations. The two cormorant shots above were taken under what I consider to be “bad” conditions. The sky was mostly cloudy with sunbreaks every few minutes leading to having to constantly chimp settings. When the sun emerged, it produced a blinding, muddy-yellow glare off the water’s surface. Because the fishing behavior documented was happening all around me, the sun was sometimes behind and sometimes ahead—making for an exciting morning of work!

Eared Grebe, Offatt's Bayou, Galveston Island, Texas
Ad Noctem: An Eared Grebe Paddles off into the Fog, Offatt’s Bayou, Galveston Island, Texas. I like the way the wake ends at a veil of fog. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.
Eared Grebe, Offatt's Bayou, Galveston Island, Texas
Eared Grebe, Offatt’s Bayou, Galveston Island, Texas. Perfect light, but not perfect perspective. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Two recent visits to Offatt’s Bayou occurred during very different optical conditions. The upper grebe and loon immediately below were shot on a gloomy, gray, foggy morning. And the lower grebe and loon were shot on the same glorious, clear, bright morning about a week later at the same place.

This shooting locale (where 61st crosses Offfatt’s Bayou) has only recently become accessible again. Where rickety old docks used to stand, there is now a large raised cement viewing/fishing platform. The problem with the new platform is that it is too high, leading to an extreme shooting angle. The old situation was actually better, assuming you were willing to risk falling into the drink to get the shot. Alas, there’s really nothing to be done about the angle now—except to try and capture some interesting wave forms, colors, reflections, or textures from the surface of the water. Sometimes you have to take what you can get! Progress!

Common Loon, Offatt's Bayou, Galveston Island, Texas
Made in the Shade: Common Loon, Offatt’s Bayou, Galveston Island, Texas. It looks like this bird is swimming in mercury. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.
Common Loon, Offatt's Bayou, Galveston Island, Texas
Transitional Common Loon, Offatt’s Bayou, Galveston Island, Texas. Images from this locale tend to look better from a bit of a distance, given the raised nature of the observation platform. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Cooperative Feeding in American White Pelicans

Birds are the most popular group in the animal kingdom. We feed them and tame them and think we know them. And yet they inhabit a world which is really rather mysterious. –David Attenborough

Line of American White Pelicans, East Beach, Galveston Island, Texas
Line of American White Pelicans, East Beach, Galveston Island, Texas. Canon EOS 7D/600mm f/4L IS (+1.4x TC). Natural light.

Frankly we haven’t gotten out much lately. This is a function of terrible weather and just plain exhaustion. The prospect of fighting traffic on a gloomly, humid 85° day in February hasn’t held much charm. Spending time indoors has led to combing through the photo archives and pining for past years in which we had a proper winter.

One of the things we would have been watching for this week, had we been outdoors, is the cooperative feeding behavior of American White Pelicans. Whenever I see these birds I stand in awe, just waiting for them to so something neat. Is there anything more majestic in American birding than a string of White Pelicans paddling in formation along the shallows searching for schools of fish?

American White Pelican Feeding Frenzy, East Beach, Galveston Island, Texas
American White Pelican Feeding Frenzy, East Beach, Galveston Island, Texas. Canon EOS 7D/600mm f/4L IS (+1.4x TC). Natural light.

American White Pelicans are known to cooperatively herd fish into the shallows by beating their wings. On Galveston, a fairly common sight is a line of White Pelicans suddenly forming a circle, beaks pointed inward, and gobbling up a school of fish (presumably).

Pelican Phalanx, East Beach, Galveston Island, Texas
Pelican Phalanx, East Beach, Galveston Island, Texas. Canon EOS 7D/600mm f/4L IS (+1.4x TC). Natural light.

Once the feeding frenzy is over, the birds turn around within their circular formation and reassemble into their line and continue paddling along peacefully . . . until the next school of fish.

After fishing, East Beach, Galveston Island, Texas
Back in Line, East Beach, Galveston Island, Texas. Canon EOS 7D/600mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Two Shutterbirds Uncensored

Beauty in art is often nothing but ugliness subdued.—Jean Rostand

Alligator with gar, Elm Lake, Brazos Bend State Park, Texas
Red in Tooth and Claw: Alligator with Gar, Elm Lake, Brazos Bend State Park, Texas. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

Some of the most memorable photographs in history are unflinching documents of the brutality of the world. Think of Matthew Brady’s images of the American Civil War, or Robert Capa’s slightly mis-framed, slightly out-of-focus photo of a falling soldier, shot dead during the Spanish Civil War (Loyalist Militiaman at the Moment of Death, 1936). And who can ever forget Nick Ut’s image of a napalm-burned Vietnamese girl running screaming down a road surrounded by scattered refugees and soldiers?

Little Blue Heron with Tadpole, Pilant Lake, Brazos Bend State Park, Texas
Little Blue Heron with Tadpole, Pilant Lake, Brazos Bend State Park, Texas. Despite the fact that many images of waders hunting amphibians depict clean “takes,” the process of spearing and eating a frog is usually a messy business. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

Nature, like war, offers up some dark and grisly images. As one who is interested in photographing birds, especially waders, in the act of hunting, I often witness and document violent and bloody scenes. Waders, after all, are stone-cold killers. If a sequence of images is taken, a few images are usually relatively tame–the ones I present to friends, or in talks–or on this site. Often, there are others, typically not shared, with jets of blood and streamers of entrails. Is it not right to share these images, too?

Molting Northern Cardinal with Weevil, near Elm Lake, Brazos Bend State Park, Texas
Molting Northern Cardinal with Large Mashed Weevil, near Elm Lake, Brazos Bend State Park, Texas. This bird made a real mess of a great big black weevil. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

Similarly, photographers tend to avoid birds in molt or with injuries, diseases, and deformities. But the more time one spends in the field, the more of these not-so-pretty pictures of nature emerge. Of course, these images may have value as documents of the current state of affairs in a particular place or the world in general.

Green-tailed Towhee with Bumblefoot(?), Pilant Lake, Brazos Bend State Park, Texas
Green-tailed Towhee with Bumblefoot(?), Pilant Lake, Brazos Bend State Park, Texas. A beautiful sparrow miles outside its range, this bird appears to have, sadly, bacterially-infected feet. There is a story here. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

And where nature photographers should document unflinchingly is where they observe the continued degradation and destruction of nature at the hand of man, whether through direct action or through the actions of human-introduced species. Who knows, it may make a difference.

Black Vultures with Feral Hogs, Elm Lake, Brazos Bend State Park, Texas
Black Vultures with Feral Hogs, Elm Lake, Brazos Bend State Park, Texas. Feral hogs are rooting invasives introduced by humans. They wreak havoc wherever they go. Exhibit A: Here stands a nasty mud-wallow where once stood a charming little island. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham and Elisa D. Lewis. All rights reserved. No text or images may be duplicated or distributed without permission.

The Situation on the Ground (with Squirrels)

Digging in the dirt
Stay with me I need support
I’m digging in the dirt
Find the places I got hurt . . . . —Peter Gabriel, Digging in the Dirt

Golden-mantled Ground Squirrel, Beaver Meadows, Rocky Mountain National Park, Colorado
Golden-mantled Ground Squirrel, Beaver Meadows, Rocky Mountain National Park, Colorado. This curious and charming little ground squirrel is common throughout its range in the western U.S. and southern Canada. Happily, there are no known specific threats to its continued survival. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

When  birds are not around, the bird photographer must find other critters to photograph. Often that honor falls to ground squirrels and kin! As is my usual methodology, I research the animals I encounter in the field. Just as in the case of birds, ground squirrels tell a mixed story of success and struggle in a human-dominated world.

Not surprisingly, we’ve really only seen ground squirrels that are doing pretty well (for the most part) since we haven’t yet mounted specific expeditions to see and photograph the rare and threatened ones like the Mohave, Townsend’s, or Washington ground squirrels. Make no mistake, some ground squirrels are battling for survival against many of the same menaces facing birds–habitat destruction, cats, and poisons.

Black-tailed Prairie Dog, near Roswell, New Mexico
Black-tailed Prairie Dog, near Roswell, New Mexico. Canon EOS 7D/600mm f/4L IS (+1.4x TC). Natural light.

Although technically considered a species of “least concern,” the areal extent of Black-tailed Prairie Dog colonies has fallen to about 2% of historical levels. Considered by many farmers and ranchers to be pests (Get the bazooka, Joe!), these burrowing rodents are lynchpins of their local ecology. They have many interesting ecological relationships with a variety of other organisms. Birders might be concerned about their fate given their role as prey to a variety of raptors including Red-tailed and Ferruginous Hawks and Golden Eagles. Also, Burrowing Owls will nest in prairie dog burrows (and the burrows of many other mammals, as well). In 2004, the black-tailed prairie dog was removed from consideration for endangered status based on population studies. One wonders what the level of concern would be if the range of human distribution decreased by 98% in a century and a half. I bet everyone would think everything was OK.

The rock squirrel is a suspicious fellow we see occasionally on outings in West and Central Texas and Arizona. This is a big, dark chunky squirrel that is way more timid than one would expect given its heft. Try and flush one of these characters into a pillowcase, BM! At places like Franklin Mountains State Park and Lost Maples State Natural Area, these seed-hogging marauders can often be seen emptying the bird feeders of seeds. In contrast to the prairie dog, this is not a popular squirrel among the birds—nor likely anyone maintaining a seed feeder within its range (Get the blunderbuss, Bob!).

Rock Squirrel, Arizona Sonora Desert Museum, Tucson, Arizona
Think what you will of me: I am serene (For now. As long as you stay there. And don’t move). Rock Squirrel, Arizona Sonora Desert Museum, Tucson, Arizona. This squirrel is showing me his hands so I know that he is unarmed. Canon EOS 7D/600mm f/4L IS (+1.4x TC). Natural light.

Although relatively little is known about its ecology, the Uinta ground squirrel is easy to spot at Yellowstone National Park. There are no known threats to its survival, especially since a big chunk of its limited range falls within that park in Idaho, Montana, and Wyoming. These critters are considered by some farmers to be agricultural pests (Arm photon torpedoes, Scotty!) because of their unforgivable tendency to dig and root up plants.

Now that we’ve seen quite a few species of squirrel, tree and ground, I have started paying more attention to them. When in a strange place, I’ve stopped assuming every squirrel I’ve seen is a common species (or subspecies) I’ve seen a hundred times before. For example, turns out a patch of habitat we bird occasionally (Cave Creek, Arizona) is home to the Mexican fox squirrel. Maybe next time I’ll capture a nice image of this cheeky critter!

Uinta Ground Squirrel, Yellowstone National Park, Wyoming
“Get yer finger offa the trigger, amigo! I’m keepin’ my hands where you can see ’em!” Uinta Ground Squirrel, Yellowstone National Park, Wyoming. Canon EOS 7D/500mm f/4L IS (+1.4x TC). Natural light.

©2017 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.

Fiorenza Park Action!

Motion is tranquility. –Stirling Moss

Soaring Great Blue Heron, Fiorenza Park, Houston, Texas
Soaring Great Blue Heron, Fiorenza Park, Houston, Texas. After spending a morning trying to photograph cormorants blazing past, capturing a slowly passing Great Blue seemed almost easy by comparison. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Despite being crowded, Fiorenza Park is a nice, easy get-away for Houston bird photographers. And there are a number of opportunities that would be difficult to realize elsewhere. I have already discussed some of the weird invasive species that can be observed here in previous posts. The most appealing opportunities, though, are offered by a hill that overlooks the bayou connecting the north and south lakes. A small road leads to within yards of where to stand for optimum shooting on the hill-top—talk about your low-energy photo-birding!

Cormorants can be seen flying from the south lake and along this bayou carrying nesting materials and fish to small islands in the north lake (and back again empty handed, so to speak). Sometimes the birds fly almost at eye-level as seen from the hill. Besides cormorants, waders sometimes fly along the same path. The hill-top also allows the photographer to survey most of the bayou where waders can be seen hunting.

Neotropic Cormorant with Vine, Fiorenza Park, Houston, Texas
Neotropic Cormorant with Vine, Fiorenza Park, Houston, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

I struggled initially with this spot because the birds typically come in too fast for my normal (albeit unusual) photographic technique: I pick my shots and shoot one frame at a time (with autofocus confirmation). My rationale for this is three-fold. If I am shooting with flash, the flash capacitor can’t recharge fast enough to keep up with a high frame rate. Also, the typical machine gun approach is hell on shutters. This is not so much of a problem with the 7DII, which is rated for 200k actuations, but the old 7D had a life expectancy of only 100k shots. A burned-out shutter is no fun right in the middle of shoot. Just firing away in high-speed mode also means weeding a bunch of junk shots, which is also no fun.

For this locale, I switched to a more typical bird-in-flight (BIF) methodology: I just blaze away in high-speed AI servo (without autofocus confirmation or flash) with image stabilizer in panning mode, and I pick out the goodies from a bunch of baddies. It definitely works better than my initial conservative approach.

Great Egret with Ibis Head, Fiorenza Park, Houston, Texas
Weird Scene: Great Egret with Juvenile Ibis Head, Fiorenza Park, Houston, Texas. Waders are not above eating carrion. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

Despite the park appearing somewhat sterile compared with, say, Brazos Bend State Park or many of the local national wildlife refuges, Great Blue, Little Blue, and Tricolored Herons and Snowy and Great Egrets enjoy great hunting success along the Fiorenza bayou. South American armored catfish are often taken, and I have heard anecdotal reports of Tilapia, (a South American invasive cichlid) also being grabbed.

Having the camera in the BIF mode described above had one unpredicted benefit in the case of the image below. I saw the bird strike and just blazed away. I never actually saw what the bird had until I chimped for exposure ex post facto. According to the frame rate, the bird was in contact with the snake for about 4-tenths of a second in total. The snake was wound around the bird’s beak for about 2-tenths of a second when the bird dumped the snake. According to long-time friend and herpetologist D.S. who identified the snake for me, the diamondback watersnake is an extremely aggressive fast-biter when cornered or attacked. I can vouch for this expert assessment: This bird wanted no part of that snake once it figured out what it was dealing with.

Great Egret with Diamondback Water Snake, Fiorenza Park, Houston, Texas
Great Egret with Diamondback Water Snake (Nerodia rhombifer), Fiorenza Park, Houston, Texas. Canon EOS 7DII/600mm f/4L IS (+1.4x TC). Natural light.

©2016 Christopher R. Cunningham. All rights reserved. No text or images may be duplicated or distributed without permission.