Bird Conservation Region 25

West Gulf Coastal Plain / Ouachitas

An ecological region spanning Arkansas, Louisiana, Oklahoma, Texas, with 110 survey routes. BCRs are the natural unit for bird trends.

What Is Moving Here

long arc declinecomputed index

Loggerhead Shrike has collapsed in West Gulf Coastal Plain / Ouachitas: down 97% on the route-weighted index since 1969.

long arc increasecomputed index

Cliff Swallow has surged in West Gulf Coastal Plain / Ouachitas: up 33× on the route-weighted index since 1976.

long arc declinecomputed index

Field Sparrow has collapsed in West Gulf Coastal Plain / Ouachitas: down 96% on the route-weighted index since 1969.

long arc increasecomputed index

Mississippi Kite has surged in West Gulf Coastal Plain / Ouachitas: up 15× on the route-weighted index since 1970.

long arc declinecomputed index

Northern Bobwhite has collapsed in West Gulf Coastal Plain / Ouachitas: down 95% on the route-weighted index since 1969.

long arc increasecomputed index

Eastern Towhee has surged in West Gulf Coastal Plain / Ouachitas: up 13× on the route-weighted index since 1969.

How Guilds Are Faring

Survey Routes

Species By Family

Osprey Pandionidae

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.