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

European Starling In Northern Rockies

All regionsNorthern RockiesGeneralists

European Starling in Northern Rockies has increased: up 50% on the route-weighted index since 1970.

+50%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 →
178Routes 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 European Starling in Northern Rockies. See the full index history below.

European Starling In Northern Rockies Population Forecast

If the recent trend holds, European Starling in Northern Rockies is projected to fall about 29% by 2030 — from 22 in 2025 to a central estimate of 15 (95% range 3.4–27). A 5-year backtest shows a typical error of ±34.3%, with 100% of held-out values landing inside the 95% band.

-29%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 →
15Projected 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 →
3.4–2795% 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 →
±34.3%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, European Starling in Northern Rockies is projected to fall about 29% by 2030 — from 22 in 2025 to a central estimate of 15 (95% range 3.4–27). A 5-year backtest shows a typical error of ±34.3%, 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 →
2026163.628
2027163.528
2028163.528
2029153.427
2030153.427

Routes In Northern Rockies

Routes recording European Starling 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 →
Pablo Res.MONTANA5512025
CodyWYOMING2362025
Clyde ParkMONTANA2342025
MadrasOREGON2172025
Threemile WaMONTANA2052025
GlenMONTANA1532025
ChewelahWASHINGTON1322021
SpartaOREGON1302025
BoulderMONTANA1172025
BridgeportOREGON1042025
BeaverheadMONTANA1022025
EtheteWYOMING952025
MeeteetseWYOMING902025
OttoWYOMING892025
LaurelMONTANA602025
Church HillMONTANA602025
BasinWYOMING602025
Willow CreekMONTANA531981
CascadeIDAHO511984
AugustaMONTANA512025
WorlandWYOMING502024
Green RiverWYOMING491984
Red RockMONTANA482024
Malheur Res.OREGON422023
Twin BridgesMONTANA411976

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