BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

Gray Catbird In Great Basin

All regionsGreat BasinForest birds

Gray Catbird in Great Basin has edged down: down 16% on the route-weighted index since 1970.

-16%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 →
61Routes In RegionSurvey 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 SignalsNotable 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 Great Basin. See the full index history below.

Gray Catbird In Great Basin Population Forecast

If the recent trend holds, Gray Catbird in Great Basin is projected to rise about 121% by 2030 — from 0.17 in 2025 to a central estimate of 0.37 (95% range 0.11–0.63). A 5-year backtest shows a typical error of ±45.8%, with 100% of held-out values landing inside the 95% band.

+121%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 →
0.37Projected 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 →
0.11–0.6395% 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 →
±45.8%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 Great Basin is projected to rise about 121% by 2030 — from 0.17 in 2025 to a central estimate of 0.37 (95% range 0.11–0.63). A 5-year backtest shows a typical error of ±45.8%, 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 →
20260.360.100.62
20270.360.100.62
20280.360.110.63
20290.370.110.63
20300.370.110.63

Routes In Great Basin

Routes recording Gray Catbird in Great Basin.
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 →
GiffordIDAHO92017
Hardware RanchUTAH82023
LeavenworthWASHINGTON82024
NighthawkWASHINGTON82025
JoelIDAHO62024
SpringfieldIDAHO42005
Twin ButtesIDAHO42022
Dinner StaNEVADA41968
TwispWASHINGTON42024
TonasketWASHINGTON42016
Lake ChelanWASHINGTON42025
WaitsburgWASHINGTON42004
AlmoIDAHO32025
HyrumUTAH31978
WinthropWASHINGTON32022
Iron SpringsIDAHO22008
Walker CanNEVADA21968
JosephOREGON21981
PendletonOREGON22025
Fish LakeOREGON22025
GoshenUTAH22016
ReardanWASHINGTON22024
AsotinWASHINGTON22021
RonaldWASHINGTON22022
Blewett PassWASHINGTON22004

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