Bird Conservation Region 31

Peninsular Florida

An ecological region spanning Florida, with 82 survey routes. BCRs are the natural unit for bird trends.

What Is Moving Here

long arc declinecomputed index

Least Tern has collapsed in Peninsular Florida: down 98% on the route-weighted index since 1968.

long arc increasecomputed index

Black-bellied Whistling-Duck has surged in Peninsular Florida: up 92× on the route-weighted index since 1995.

long arc declinecomputed index

Burrowing Owl has collapsed in Peninsular Florida: down 97% on the route-weighted index since 1968.

long arc increasecomputed index

Crested Caracara has surged in Peninsular Florida: up 13× on the route-weighted index since 1987.

long arc declinecomputed index

Double-crested Cormorant has collapsed in Peninsular Florida: down 95% on the route-weighted index since 1968.

long arc increasecomputed index

White-winged Dove has surged in Peninsular Florida: up 931% on the route-weighted index since 1979.

How Guilds Are Faring

Survey Routes

Species By Family

Osprey Pandionidae

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