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

White-breasted Nuthatch In Great Basin

All regionsGreat BasinForest birds

White-breasted Nuthatch in Great Basin has increased: up 27% on the route-weighted index since 1970.

+27%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 →
73Routes 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 White-breasted Nuthatch in Great Basin. See the full index history below.

White-breasted Nuthatch In Great Basin Population Forecast

If the recent trend holds, White-breasted Nuthatch in Great Basin is projected to rise about 42% by 2030 — from 0.42 in 2025 to a central estimate of 0.60 (95% range 0.27–0.92). A 5-year backtest shows a typical error of ±136.6%, with 20% of held-out values landing inside the 95% band.

+42%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 →
0.60Projected 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 →
0.27–0.9295% 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 →
±136.6%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, White-breasted Nuthatch in Great Basin is projected to rise about 42% by 2030 — from 0.42 in 2025 to a central estimate of 0.60 (95% range 0.27–0.92). A 5-year backtest shows a typical error of ±136.6%, with 20% 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 →
20260.570.250.90
20270.580.250.90
20280.580.260.91
20290.590.270.92
20300.600.270.92

Routes In Great Basin

Routes recording White-breasted Nuthatch 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 →
Iron GateCALIFORNIA132019
ChinchaloOREGON132025
Crowder FlatCALIFORNIA112019
SistersOREGON112025
ArdenvoirWASHINGTON81969
Fall River MillsCALIFORNIA72011
Davis LakeOREGON62025
Badger CreekOREGON52025
MacdoelCALIFORNIA42019
PauninaOREGON42025
AsotinWASHINGTON41971
L. WenatcheeWASHINGTON42025
PaisleyOREGON32025
Lapham Res.OREGON32025
LakeviewOREGON32025
Blewett PassWASHINGTON32022
BodieCALIFORNIA22014
Davis CreekCALIFORNIA22012
HackamoreCALIFORNIA22010
Medicine Mtn.CALIFORNIA22015
Magic MtnIDAHO21990
JoelIDAHO22024
IllipahNEVADA21994
Modoc PointOREGON22010
BlyOREGON22001

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