Birding Big Bend National Park

Sky-island canyons, the Rio Grande, and the only Colima Warbler in the U.S.

Where & when: Big Bend National Park, in the remote Trans-Pecos, has recorded more than 450 bird species — more than any other national park — thanks to a sweep of habitats from the Rio Grande floodplain up to the Chisos Mountains, a Chihuahuan Desert “sky island” reaching nearly 8,000 feet. It’s the only place in the U.S. to see the Colima Warbler, which nests high in the Chisos from mid-April into summer. Spring and early summer are prime for the mountain and desert specialties.

Bird Big Bend with a guide.
The centerpiece of a multi-day West Texas trip from the Austin area — the Chisos for the Colima Warbler, plus Rio Grande Village and the desert oases. Big, remote country where a guide handles the logistics and the local knowledge.

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Where we’ll look

Chisos Basin

The sky-island heart of the park — Mexican Jay, Blue-throated Mountain-gem, Painted Redstart, and, up the Pinnacles and Boot Canyon trails, the celebrated Colima Warbler.

Rio Grande Village

The richest habitat in the park, with 300+ species reported. The nature trail and cottonwoods hold Vermilion Flycatcher, Common Black Hawk, Zone-tailed Hawk, and a long list of riparian birds.

Desert oases — Sam Nail & Dugout Wells

Old windmill springs that act as migrant traps and hold Varied and Painted Buntings, Crissal Thrasher, Pyrrhuloxia, and desert specialties.

Cottonwood Campground & the west side

Along Ross Maxwell Scenic Drive, more riparian and desert habitat with a chance at Lucifer Hummingbird, Gray Vireo, and Elf Owl at dusk.

The Colima Warbler

The Colima Warbler nests nowhere else in the United States — only in the oak-and-maple canyons high in the Chisos Mountains. Reaching it means a real hike into the high country, up the Pinnacles Trail toward Boot Canyon, and the bird is present from about mid-April into September (best late April through June, when the males are singing). It’s one of the most sought-after target birds in North America, and getting on it is a genuine accomplishment.

Why go with a guide

Big Bend is vast, remote, and thin on services, and its best birds are spread across elevations and long drives — from the river up to the Chisos high country. Knowing the timing, the exact trails, and where each specialty is being found makes the difference, especially for a hard-won bird like the Colima Warbler. I handle the route, the logistics, and the local knowledge so your days out here are spent efficiently and on the birds that make the trip worth it.

Your guide

I’m Bryan Cotter, an Austin-based professional birding guide — in 2025 the 10th person in history to record 500 bird species in Texas, and holder of the Travis County Big Year record of 330 species. More about me →

Big Bend birding FAQ

Where can you see the Colima Warbler?

Only in the Chisos Mountains of Big Bend National Park — the bird's sole U.S. range. It takes a hike into the high country (the Pinnacles Trail toward Boot Canyon), and the warbler is present from about mid-April into summer, best late April through June.

When is the best time to bird Big Bend?

Mid-April through July is prime, when the Colima Warbler is on territory and the desert and montane breeders are easiest to find. Spring migration adds birds at the river and the oases; winter is quieter but still rewarding.

What other specialties live in Big Bend?

Mexican Jay, Blue-throated Mountain-gem, Painted Redstart, Lucifer Hummingbird, Varied Bunting, Crissal Thrasher, Gray Vireo, Vermilion Flycatcher, Common Black Hawk, Zone-tailed Hawk, and Elf Owl, among many others across the park's habitats.

How much hiking is involved?

It varies. Rio Grande Village and the desert oases are easy and level, but the Colima Warbler requires a strenuous mountain hike into the Chisos. We tailor the effort to what you're after and how far you want to walk.

Do you offer guided Big Bend tours?

Yes. Big Bend is the centerpiece of a multi-day West Texas tour run from the Austin area, built around your target birds. Contact me with your dates and I’ll plan it.

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