BirdAnalyst
Species · Idaho · BBS 2026 Release · 1966–2025

Gray Catbird Population Trend in Idaho

All statesForest birds

Gray Catbird in Idaho has edged down: down 18% on the route-weighted index since 1970.

-18%Since 1970TrendPercent 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 →
37Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Gray Catbird 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 →

No notable trend signals for Gray Catbird in Idaho. See the full index history below.

Gray Catbird Population Forecast in Idaho

If the recent trend holds, Gray Catbird in Idaho is projected to fall about 20% by 2030 — from 1.0 in 2025 to a central estimate of 0.80 (95% range 0.09–1.5). A 5-year backtest shows a typical error of ±23.6%, with 100% of held-out values landing inside the 95% band.

-20%Change 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 →
0.80Projected 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 →
0.09–1.595% 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 →
±23.6%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, Gray Catbird in Idaho is projected to fall about 20% by 2030 — from 1.0 in 2025 to a central estimate of 0.80 (95% range 0.09–1.5). A 5-year backtest shows a typical error of ±23.6%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20260.780.071.5
20270.790.081.5
20280.790.081.5
20290.800.091.5
20300.800.091.5

Gray Catbird Survey Routes in Idaho

Routes recording Gray Catbird 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 →
Challis1020251979
Gifford920171971
Naples820251976
Joel620241989
Rochat Divde520251995
Twin Buttes420222022
Centerville420251972
Springfield420051970
Nezperce320121968
Coolin320241987
Almo320252005
Mivoden220251978
Crane Creek220112010
Iron Springs220082001
Featherville220251992
Cabarton220221987
Blackft Res119991994
Avery120231979
Lolo Pass120152014
Golden120161989
Baker120241974
N Fork Cda R120182001
Leadore120102000
Dubois119841984
Squirrel120191971

Gray Catbird Population Trend in Other States

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

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