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

Gray Catbird Population Trend in Idaho

All statesGeneralists

Gray Catbird in Idaho has held roughly steady: down 4% on the route-weighted index since 1970.

-4%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 →
56YearsYears 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 29% by 2029 — from 1.1 in 2024 to a central estimate of 0.79 (95% range 0.07–1.5). A 5-year backtest shows a typical error of ±32.1%, with 80% of held-out values landing inside the 95% band.

-29%Change 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 →
0.79Projected 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 →
0.07–1.595% 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 →
±32.1%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 29% by 2029 — from 1.1 in 2024 to a central estimate of 0.79 (95% range 0.07–1.5). A 5-year backtest shows a typical error of ±32.1%, with 80% 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 →
20250.770.061.5
20260.780.061.5
20270.780.071.5
20280.790.071.5
20290.790.071.5

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 →
Gifford920171971
Naples720241976
Centerville720191972
Joel620241989
Challis520241979
Twin Buttes420222022
Springfield420051970
Featherville420241992
Nezperce320121968
Coolin320241987
Magic Mtn220241990
Crane Creek220112010
Iron Springs220082001
Cabarton220221987
Blackft Res119991994
Mivoden120231978
Avery120231979
Lolo Pass120152014
Golden120161989
Baker120241974
N Fork Cda R120182001
Rochat Divde120231995
Leadore120102000
Dubois119841984
Squirrel120011971

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 2026-05-22.