United States · park

Boundary from OpenStreetMap, about 3,180 km². The counts below cover the park and roughly 16 km around it.
Species with at least one recorded territory whose grid cell centres fall in or near Big Bend National Park. Cells are up to 25 km across, so an animal counted here may have been recorded just outside the boundary. This is not a park checklist, and the counts follow where people look as much as what lives there.
None of the species with a full field-guide entry has records here yet. Chances for the species with a written atlas page follow below.
Species with a written atlas page and records in and around Big Bend National Park, most recorded first. Each shows how likely an encounter is here, in which months it has been recorded, and the records behind it.
The number beside each name is its records here.
The species with the most open occurrence records in and around Big Bend National Park, among those a photograph exists for. Most recorded is not most numerous: it rewards animals that are common, conspicuous and live where people go.
Zenaida asiatica
Campylorhynchus brunneicapillus
Cardinalis sinuatus
Dryobates scalaris
Geococcyx californianus
Amphispiza bilineata
Vireo bellii
Myiarchus cinerascens
Aphelocoma wollweberi
Melozone fusca
Auriparus flaviceps
Catherpes mexicanus