State · BBS 2025 Release · 1966–2024

Maryland Breeding Birds

197 species recorded across 76 survey routes, 1966 to 2024. Browse by family or guild below.

Maryland Bird Population Trends

long arc declinecomputed index

Ring-necked Pheasant has collapsed in Maryland: down 100% on the route-weighted index since 1968.

long arc declinecomputed index

Northern Bobwhite has collapsed in Maryland: down 99% on the route-weighted index since 1968.

long arc declinecomputed index

Vesper Sparrow has collapsed in Maryland: down 98% on the route-weighted index since 1968.

long arc declinecomputed index

Eastern Meadowlark has collapsed in Maryland: down 86% on the route-weighted index since 1968.

long arc declinecomputed index

Yellow-breasted Chat has collapsed in Maryland: down 84% on the route-weighted index since 1968.

long arc declinecomputed index

Western Cattle-Egret has collapsed in Maryland: down 83% on the route-weighted index since 1968.

How Bird Guilds Are Faring in Maryland

Maryland Bird Survey Routes

Browse Maryland Birds By Family

Each species links to its trend in Maryland.

Osprey Pandionidae

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