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Species · Washington · BBS 2026 Release · 1966–2025

Black-chinned Hummingbird Population Trend in Washington

All statesForest birds

Black-chinned Hummingbird in Washington has declined: down 47% on the route-weighted index since 1972.

-47%Since 1972TrendPercent 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 →
30Routes 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 →
44YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Black-chinned Hummingbird Trends in WashingtonNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Black-chinned Hummingbird in Washington. See the full index history below.

Black-chinned Hummingbird Population Forecast in Washington

If the recent trend holds, Black-chinned Hummingbird in Washington is projected to stay roughly flat through 2030, near 0.12 (95% range 0.00–0.24). A 5-year backtest shows a typical error of ±145.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2030TrendPercent 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 →
0.12Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.2495% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±145.9%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Black-chinned Hummingbird in Washington is projected to stay roughly flat through 2030, near 0.12 (95% range 0.00–0.24). A 5-year backtest shows a typical error of ±145.9%, with 100% of held-out values landing inside the 95% band.19702030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20260.120.000.24
20270.120.000.24
20280.120.000.24
20290.120.000.24
20300.120.000.24

Black-chinned Hummingbird Survey Routes in Washington

Routes recording Black-chinned Hummingbird in Washington.
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 →
Laurier620222000
Columbia Nwr320222018
Chewelah220191980
Tonasket220012001
Nighthawk220231992
Curlew220131993
Twisp120191971
Brewster120032003
Keller120041970
Turnbull Nwr120191998
L Pend O Nwr120222011
Reardan120111970
Rimrock120112011
Wapato120182018
Asotin120012001
Winthrop120141983
Cusick120221991
Ewan120022002
Ellensburg120252008
Spring Lake120231985
Carlton119951995
Scootney Reservoir120252025
Waitsburg120042004
Richland120072007
Mazama120172000

Black-chinned Hummingbird Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicooklahomaoregontexasutahwyoming

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