BirdAnalyst
Species · BCR 15 · BBS 2026 Release · 1966–2025

European Starling In Sierra Nevada

All regionsSierra NevadaGeneralists

European Starling in Sierra Nevada has held roughly steady: up 0% on the route-weighted index since 1971.

+0%Since 1971TrendPercent 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 →
27Routes 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 →
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 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 Sierra Nevada. See the full index history below.

European Starling In Sierra Nevada Population Forecast

If the recent trend holds, European Starling in Sierra Nevada is projected to rise about 78% by 2030 — from 1.7 in 2025 to a central estimate of 3.0 (95% range 0.00–7.1). A 5-year backtest shows a typical error of ±67.1%, with 100% of held-out values landing inside the 95% band.

+78%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 →
3.0Projected 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 →
0.00–7.195% 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 →
±67.1%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, European Starling in Sierra Nevada is projected to rise about 78% by 2030 — from 1.7 in 2025 to a central estimate of 3.0 (95% range 0.00–7.1). A 5-year backtest shows a typical error of ±67.1%, 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 →
20263.10.007.2
20273.00.007.2
20283.00.007.2
20293.00.007.2
20303.00.007.1

Routes In Sierra Nevada

Routes recording European Starling in Sierra Nevada.
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 →
CoultervilleCALIFORNIA1002016
GeneseeCALIFORNIA462024
Silver CityCALIFORNIA182013
SattleyCALIFORNIA122025
Cottage SpgsCALIFORNIA101975
PlacervilleCALIFORNIA101997
Bass LakeCALIFORNIA82019
WawonaCALIFORNIA72024
Greenhorn MtCALIFORNIA62008
PaxtonCALIFORNIA62025
Higgins CornCALIFORNIA52025
Hat CreekCALIFORNIA51988
WoodfordsCALIFORNIA42025
Little TruckeeCALIFORNIA42004
ChilcootCALIFORNIA42023
JohnsvilleCALIFORNIA32012
RivertonCALIFORNIA32005
Meadow ValleyCALIFORNIA32025
Kings CanyonCALIFORNIA21984
Butte MeadowCALIFORNIA22000
Last ChanceCALIFORNIA22014
Eagle LakeCALIFORNIA12012
DardanelleCALIFORNIA12003
Tuolumne GroveCALIFORNIA12021
DownievilleCALIFORNIA12018

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