Birds and Blooms along the Upper Texas Coast

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Reddish Egret

Thunder rumbled in the distance as anvil-shaped storm clouds rose to the west of the Bolivar Peninsula.  I sighed in frustration; not because I disliked these May storms that form along the Gulf, but rather because the magic hour of perfect photographic light had just begun, and the clouds were soon to blot out the sun, leaving the beach cloaked in grey.  Desperately I searched for a subject to make the most of the few minutes of usable light that remained.  Soon I spotted one of my favorite birds, a Reddish Egret (Egretta rufescens) standing stoic in the surf.  Quickly I dropped to the sand, laying belly flat in an attempt to meet this special wading bird on its level.  Just as I set my lens on it I noticed that the world was rapidly darkening as the wispy margins of the storm clouds drifted in front of the sun.  What I found, however, was that this thin veil of clouds actually created a very special light that seemed to paint the egret.  I managed to take advantage of a window of less than a minute before the cloud’s dense heart crossed over the sun, robbing the evening of any further photographic opportunities, and captured the image above.

Before the clouds’ arrival I did manage to capture a few images of other avian beach dwellers.  American Avocets (Recurvirostra americana) were plentiful.  It was the end of May now, and many shorebirds are still making their leisurely journeys northward as their summer breeding grounds gradually thaw.  I consider avocets to be one of our most beautiful shorebirds, particularly when their heads and necks are painted burnt orange in their alternate plumage.

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American Avocets

A variety of “peeps” were still present, and we spotted Sanderlings, Least Sandpipers, and a few Western Sandpipers.  Also present were several Wilson’s and Semipalmated Plovers (Charadrius semipalmatus).  The latter allowed for a fairly close approach as it probed the wet sand for worms and other invetebrates.

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Semipalmated Plover

Though they seem scarce along much of the coast, Reddish Egrets are quite common on this stretch of the Upper Texas Coast.  They are perhaps the most entertaining feathered-thing around, and I laid for several minutes watching them perform their elaborate predatory dances.  They seemed random yet choreographed in their movements, as if putting on some performance as they skipped and danced across the shallow water’s surface, stirring up tiny fish and fanning their wings above them, confusing their prey and shading them to make them more visible at the same time.

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Reddish Egret Hunting

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Reddish Egret Hunting

Ruddy Turnstones (Arenaria interpres) were also out in force.  Many had completed molting into their breeding plumage and were truly a sight to behold.

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Ruddy Turnstone

This stretch of beach is an important breeding ground for Least Terns (Sterna antillarum), a species of conservation concern.  Here they block off the main breeding area in order to protect the fragile nests, which are little more than scrapes in the sand.  The terns’ breeding efforts were kicking into high gear during our visit, and we were fortunate enough to be bombarded by several pairs that felt we were getting too close to their precious offspring, still developing within their calcium carbonate shells.

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Least Tern

We left the beach as dusk was closing in and the Ghost Crabs left the safety of their burrows to scavenge the shore.  Caro and I watched an impressive display of lightning ahead of us, and before long the storm overtook us.  It was impressive and violent, a striking contrast to the serenity of the bird-filled beach.  Perhaps it is these contrasts – tranquility and exhilaration – that keep drawing us back to the coast.

The next day we found ourselves in the Columbia Bottomlands of Fort Bend County.  These seemingly out of place forests of ancient oaks and elms harbor staggering biodiversity including many species that are rare to uncommon elsewhere.  One such species is the Texas Pinkroot (Spigelia texana).  These dainty forbs are endemic to moist woodlands and prairie remnants in southeast Texas, with a few specimens known from isolated locations further north and west in the state.

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Texas Pinkroot

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Texas Pinkroot

Growing nearby were several Aquatic Milkweeds (Asclepias perennis).  This species is sporadically encountered in East Texas, though it seems most common in these bottomlands near the coast.

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Aquatic Milkweed

The Columbia Bottomlands are also home to a diversity of birdlife.  In the shallow waters of an ancient oxbow off the Brazos River we observed Anhingas, Great and Snowy Egrets, Great, Little Blue, Tricolored, and Green Herons, Yellow-crowned Night-Herons, White Ibis, Black-bellied Whistling Ducks, Common Gallinules, and more.  Prothonotary Warblers and Northern Parulas called from the trees lining the water’s edge and the call of a Barred Owl rang out in the distance.  Perhaps the most spectacular of all was the Purple Gallinule (Porphyrio martinicus), which dazzled us with its seemingly impossible sheen of iridescent blue and green.

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Purple Gallinule

In early July we found ourselves back on the coast.  This trip we spent more time on the beach and in the shops in Galveston, however we found ourselves in the saltmarsh of Galveston Island State Park during the final hour of daylight.  Here I struggled to capture images of Black-necked Stilts, Yellow-crowned Night-Herons, Roseate Spoonbills, and Scissor-tailed Flycatchers.  At the end of the day I found myself instead pursuing one of the most familiar coastal birds – the Willet (Tringa semipalmata).  Though common and by many accounts “drab”, I set out to capture an interesting image of these charismatic shorebirds.  I laid belly-flat in the mud and scanned the landscape to try and formulate a plan as hordes of mosquitoes drained my blood.  Soon, as I watched a Willet approach, I developed a concept in my head.  I framed the shot by turning my lens to an open patch of mud in front of me, and utilized the Salicornia and other halophytic vegetation in order to create a blurred foreground and background that I hoped would make the bird pop.  I lucked out as the bird moved into the frame and called out its displeasure, likely to my proximity to its nest or chicks I imagined.  And with some luck and patience, I captured the image below.

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Willet

Each trip to the coast brings with it some new adventure and opportunity to witness a unique natural beauty not found elsewhere in the state.  It also offers some of our state’s best photographic opportunities, particularly for birds.  I look forward to many future trips, and hope that I may continue to document in some way the very special plants, animals, and natural communities that can be found there.

South Texas Part I: Along the Coast

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Coastal Dunes with Beach Morning Glory

When I was developing my 2017 list I added several species that were contingent on a spring break trip to Big Bend.  Unfortunately I did not plan ahead enough, and by the time I tried to make arrangements out west everything was already booked up.  Fortunately there are so many biodiversity hot spots in Texas that it was not hard to find a substitute.  We decided on the varied subtropical habitats of Deep South Texas.  Here one can encounter a suite of endemics and Mexican specialties that are found nowhere else in the country.  It may come as no surprise that immediately after posting my 2017 list I began thinking about my 2018 list, in which I planned to include many of the South Texas specialties.

So Carolina and I began an adventure with my entire family: my brother, Seth, my mom, Jolynn, and my dad, Jack.  We traveled south in two vehicles intent on seeking out plants, birds, herps, and good food.  Our first couple days were allocated for time along the coast, from Port Aransas to South Padre.

The South Texas coast contains several extensive dune fields, primarily along the barrier islands.  Some are ever shifting, and some have been stabilized with vegetation and debris.  One might be surprised to find plants clinging to life in these sandy wastelands, however several species thrive in these shifting sands.  The most conspicuous species during our trip was the Beach Morning Glory (Ipomoea imperati), which is a coastal specialist ranging from the Atlantic Coast from North Carolina to Florida to the Gulf Coast of Florida to Texas.  We enjoyed the view from the base of the dunes as Sanderlings (Calidris alba), Ruddy Turnstones (Arenaria interpres), Willets (Tringa semipalmata), and Black-bellied Plovers (Pluvialis squatarola) chased the receding waterline only to swiftly retreat with each incoming wave.

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Beach Morning Glory

Beyond the dunes lie a variety of habitats including wet and dry prairies and marshes.  Marshes vary from saline to brackish to freshwater, depending on the influence of tidal waters.  We spent time exploring some high quality saltmarshes, one of my favorite communities, where we observed several bird species including Long-billed Curlews (Numenius americanus), Marbled Godwits (Limosa fedoa), Spotted Sandpipers (Actitus maculatus), Greater Yellowlegs (Tringa melenaleuca), American Oystercatchers (Haematopus palliatus), Clapper Rails (Rallus crepitans (formerly R. longirostris)), American Coots (Fulica americana), Common Moorhens(Gallinula chloropus), Osprey (Pandion haliaetus), Redheads (Aythya americana), Northern Pintails (Anas acuta), Blue-winged Teal (Anas discors), Black-bellied Whistling Ducks (Dendrocygna autumnalis), and Mottled Ducks (Anas fulvigula). Mottled Ducks are coastal specialists that range from Florida to central Mexico.  These close relatives of the Mallard have experienced population declines throughout much of their range as coastal habitat has been lost to development and sea level rise.

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Mottled Duck

The marshes were also home to a variety of wading birds including American Bitterns (Botaurus lentiginosus), Roseate Spoonbills (Platalea ajaja), White Ibis (Eudocimus albus), Green Herons (Butorides virescens), Great Blue Herons (Ardea herodias), Great Egrets (Ardea alba), Snowy Egrets (Egretta thula), Reddish Egrets (Egretta rufescens), Yellow-crowned Night-Herons (Nyctanassa violacea), Black-Crowned Night-Herons (Nycticorax nycticorax), and some cooperative Tricolored Herons (Egretta tricolor) and Little Blue Herons (Egretta caerulea).

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Tricolored Heron

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Little Blue Heron

A number of songbirds were also present.  We observed several Common Yellowthroats (Geothlypis trichas) and scores of Red-winged Blackbirds (Agaleius phoeniceus) and Great-tailed Grackles (Quiscalus mexicanus).  The Grackles were particular tame, and would perch on the boardwalk support posts mere feet away from us.

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Great-tailed Grackle

Slight variations of topography along the coast result in vastly different vegetative communities.  On small sandy crests and ridges dry prairies and scrublands persist.  These prairies are dominated by a variety of grasses and forbs.  The most visible member of this community is the Spanish Dagger (Yucca treculeana).  These stately yuccas are common in these dry prairies, and in the United States are restricted to southern Texas, New Mexico, and Arizona.

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Spanish Dagger

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Spanish Dagger Flowers

Along the wetter transition zone between marsh and prairie Carolina spotted a pair of Texas Feathershanks (Schoenocaulon texanum).  These bizarre members of the lily family can be found in south, central, and west Texas and southwest New Mexico.

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Texas Feathershank

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Texas Feathershank

The contact zone between the dunes and coastal prairie also harbor an interesting flora.  Arkansas Lazy Daisy (Aphanostephus skirrhobasis) is a widespread species of the south central states that can be common in this community.

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Arkansas Lazy Daisy

The lazy daisy is popular with pollinators, and coincidentally with their predators like this crab spider (Misumenoides formosipes) that awaits a hungry pollinator to fall into its trap.

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A crab spider awaits an unsuspecting pollinator

American Bluehearts (Buchnera americana) was also fairly common in this community.

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American Bluehearts

I have always been a fan of milkworts.  I was delighted to see several White Milkworts (Polygala alba), which we don’t have in East Texas.

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White Milkwort

Texas Palafox (Palafoxia texana) is primarily restricted to southern Texas.  Its brilliant pink blooms added a splash of color to the primarily brown grasses of the coastal prairie.

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Texas Palafox

I observed this wasp, Campsomeris tolteca (thanks to Seth Patterson for the ID), feeding on the nectar-rich flowers of the Texas Palafox..

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Campsomeris tolteca

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Campsomeris tolteca

Scattered along the coast are a series of woodlots primarily dominated by Live Oak (Quercus virginiana and Quercus fusiformis) and Hackberry (Celtis laevigata).  Here we observed a variety of Neotropical Migrant birds including Yellow-throated Vireos (Vireo flavifrons), Northern Parulas (Setophaga americana), Black-and-white Warblers (Mniotilta varia), and Yellow-throated Warblers (Setophaga dominica).

These woodlots are also home to Drummond’s Hedgenettle (Stachys drummondii).  This member of the mint family is restricted to the Texas Coast and the Rio Grande Valley.

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Drummond’s Hedgenettle

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Drummond’s Hedgenettle

Stachys drummondii

County Level Distribution for Drummond’s Hedgenettle from http://www.bonap.org

The wealth of biodiversity along the coast was not limited to land.  We observed a variety of shells, jellyfish, and dead fish along the shore, as well as a number of dolphin pods on the move offshore.  The most exciting encounter of the trip, however, came in the form of this juvenile sea turtle, which I believe is a Mexican Green Sea Turtle (Chelonia mydas).  Thanks to a tip from my good friend John Williams, we were able to observe several foraging just offshore.  Despite the cool morning, 40 mile per hour winds, and spitting rain, everyone enjoyed watching this rare marine reptiles as they surfaced for a breath before returning to the depths.

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Green Sea Turtle

The South Texas Coast was good to us, however the trip had only begin.  Next we would be venturing into the South Texas Brush Country, famed for its biodiversity and specialty species that can be found nowhere else in the country.