BirdAnalyst
Species · BCR 10 · BBS 2026 Release · 1966–2025

Brown Creeper In Northern Rockies

All regionsNorthern RockiesForest birds

Brown Creeper in Northern Rockies has held roughly steady: up 3% on the route-weighted index since 1970.

+3%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 →
95Routes 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 →
55YearsYears 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 Brown Creeper in Northern Rockies. See the full index history below.

Brown Creeper In Northern Rockies Population Forecast

If the recent trend holds, Brown Creeper in Northern Rockies is projected to rise about 35% by 2030 — from 0.21 in 2025 to a central estimate of 0.29 (95% range 0.07–0.51). A 5-year backtest shows a typical error of ±18.1%, with 100% of held-out values landing inside the 95% band.

+35%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 →
0.29Projected 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 →
0.07–0.5195% 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 →
±18.1%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, Brown Creeper in Northern Rockies is projected to rise about 35% by 2030 — from 0.21 in 2025 to a central estimate of 0.29 (95% range 0.07–0.51). A 5-year backtest shows a typical error of ±18.1%, 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 →
20260.280.060.50
20270.280.060.50
20280.280.070.50
20290.290.070.50
20300.290.070.51

Routes In Northern Rockies

Routes recording Brown Creeper in Northern Rockies.
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 →
Lolo PassIDAHO102019
SilviesOREGON62024
Mount VernonOREGON52024
Omak CreekWASHINGTON42024
Deer ParkWASHINGTON42008
NezperceIDAHO31985
CoolinIDAHO32025
CabartonIDAHO32007
WoodmanMONTANA32022
LogdellOREGON32025
Eagle RockOREGON31977
TroyOREGON32025
OchocoOREGON32025
Sullivan Lake 2WASHINGTON32025
GrangevilleIDAHO22023
CascadeIDAHO21983
Salmon RiverIDAHO22023
BurgdorfIDAHO22013
N Fork Cda RIDAHO22019
Libby DamMONTANA21992
Logan PassMONTANA22021
VictorMONTANA21998
Threemile WaMONTANA22023
GreenoughMONTANA22000
FloraOREGON22023

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