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

Belted Kingfisher Population Trend in Idaho

All statesGeneralists

Belted Kingfisher in Idaho has collapsed: down 81% on the route-weighted index since 1971.

-81%Since 1971TrendPercent 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 →
50Routes 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 →
53YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Belted Kingfisher 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 →

Belted Kingfisher has collapsed in Idaho: down 81% on the route-weighted index since 1971.

Belted Kingfisher Population Forecast in Idaho

If the recent trend holds, Belted Kingfisher in Idaho is projected to stay roughly flat through 2029, near 0.07 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±62.6%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029TrendPercent 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 →
0.07Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.3695% 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 →
±62.6%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, Belted Kingfisher in Idaho is projected to stay roughly flat through 2029, near 0.07 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±62.6%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.100.000.39
20260.090.000.38
20270.090.000.38
20280.080.000.37
20290.070.000.36

Belted Kingfisher Survey Routes in Idaho

Routes recording Belted Kingfisher 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 →
Crane Creek319981998
Nezperce220121968
Golden220161987
N Fork Cda R220191994
Joel220171996
Pierce220051990
Yellow Pine220091989
Nezperce Nf219981992
Naples120191972
Mivoden120181990
Avery120001981
Gifford120111971
Lolo Pass120051993
Grangeville119961996
Deep Creek119851985
Baker120191978
Cascade119841971
Cape Horn120121988
Challis119991977
Leadore120231974
Squirrel120231972
Blacks Creek119871987
Centerville120191972
Rochat Divde120231993
Craters119861986

Belted Kingfisher Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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