State · BBS 2026 Release · 1966–2025

Alaska Breeding Birds

245 species recorded across 135 survey routes, 1968 to 2025. Browse by family or guild below.

Alaska Bird Population TrendsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

Red-breasted Nuthatch has surged in Alaska: up 930% on the route-weighted index since 1991.

Great Blue Heron has collapsed in Alaska: down 97% on the route-weighted index since 1973.

Greater White-fronted Goose has surged in Alaska: up 841% on the route-weighted index since 1988.

How Bird Guilds Are Faring in AlaskaGuild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology →

Alaska Bird Survey Routes

Browse Alaska Birds By FamilyTrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →

Each species links to its trend in Alaska.

Osprey Pandionidae

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.