BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Red-breasted Nuthatch In Great Basin

All regionsGreat BasinForest birds

Red-breasted Nuthatch in Great Basin has edged up: up 22% on the route-weighted index since 1970.

+22%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 →
107Routes 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 Red-breasted Nuthatch in Great Basin. See the full index history below.

Red-breasted Nuthatch In Great Basin Population Forecast

If the recent trend holds, Red-breasted Nuthatch in Great Basin is projected to rise about 51% by 2029 — from 2.0 in 2024 to a central estimate of 3.0 (95% range 1.9–4.0). A 5-year backtest shows a typical error of ±21.9%, with 100% of held-out values landing inside the 95% band.

+51%Change by 2029TrendPercent 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 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
1.9–4.095% 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 →
±21.9%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, Red-breasted Nuthatch in Great Basin is projected to rise about 51% by 2029 — from 2.0 in 2024 to a central estimate of 3.0 (95% range 1.9–4.0). A 5-year backtest shows a typical error of ±21.9%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20252.91.83.9
20262.91.83.9
20272.91.94.0
20282.91.94.0
20293.01.94.0

Routes In Great Basin

Routes recording Red-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 →
E. Mt. AdamsWASHINGTON382024
Medicine Mtn.CALIFORNIA352021
RimrockWASHINGTON342024
CarltonWASHINGTON242022
MazamaWASHINGTON242022
Blewett PassWASHINGTON182024
Dell SpringOREGON171999
LakeviewOREGON172024
L. WenatcheeWASHINGTON172024
TionestaCALIFORNIA162021
Barnes ValOREGON161987
RonaldWASHINGTON162024
PauninaOREGON152024
BartleCALIFORNIA142021
LeavenworthWASHINGTON142024
Davis LakeOREGON122024
SistersOREGON102024
Wizard FallsOREGON92024
Bald Mtn.OREGON92024
BlyOREGON82001
ChinchaloOREGON82024
SnowdenWASHINGTON82024
Crowder FlatCALIFORNIA72019
Mt HoodOREGON62024
Camp ShermanOREGON61996

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.