State · BBS 2025 Release · 1966–2024

Montana Breeding Birds

253 species recorded across 116 survey routes, 1968 to 2024. Browse by family or guild below.

Montana Bird Population Trends

long arc declinecomputed index

Trumpeter Swan has collapsed in Montana: down 94% on the route-weighted index since 1975.

long arc declinecomputed index

Evening Grosbeak has collapsed in Montana: down 92% on the route-weighted index since 1970.

long arc declinecomputed index

Pinyon Jay has collapsed in Montana: down 90% on the route-weighted index since 1971.

long arc declinecomputed index

Barrow's Goldeneye has collapsed in Montana: down 86% on the route-weighted index since 1985.

long arc declinecomputed index

Common Tern has collapsed in Montana: down 83% on the route-weighted index since 1976.

long arc declinecomputed index

Cooper's Hawk has collapsed in Montana: down 80% on the route-weighted index since 1974.

How Bird Guilds Are Faring in Montana

Montana Bird Survey Routes

Browse Montana Birds By Family

Each species links to its trend in Montana.

Osprey Pandionidae

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