BirdAnalyst
Species · Idaho · BBS 2025 Release · 1966–2024

Barrow's Goldeneye Population Trend in Idaho

All statesWaterfowl

Barrow's Goldeneye in Idaho has collapsed: down 91% on the route-weighted index since 1999.

-91%Since 1999TrendPercent 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 →
5Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
13YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Barrow's Goldeneye Trends in IdahoNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Barrow's Goldeneye has collapsed in Idaho: down 90% on the route-weighted index since 1999.

Barrow's Goldeneye Survey Routes in Idaho

Routes recording Barrow's Goldeneye in Idaho.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Springfield1519761976
Iron Springs320151999
Bates320022002
Naples120222022
Yellow Pine120031997

Barrow's Goldeneye Population Trend in Other States

alaskacoloradomontanaoregonwashingtonwyoming

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