BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Red-breasted Nuthatch In Sierra Nevada

All regionsSierra NevadaForest birds

Red-breasted Nuthatch in Sierra Nevada has risen sharply: up 61% on the route-weighted index since 1970.

+61%Since 1970
39Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Red-breasted Nuthatch has risen sharply in Sierra Nevada: up 61% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Red-breasted Nuthatch in Sierra Nevada is projected to rise about 16% by 2029 — from 15 in 2024 to a central estimate of 17 (95% range 9.0–25). A 5-year backtest shows a typical error of ±11.6%, with 100% of held-out values landing inside the 95% band.

+16%Change by 2029
17Projected 2029 index
9.0–2595% range
±11.6%Backtest error
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 index95% low95% high
2025178.625
2026178.725
2027178.825
2028178.925
2029179.025

Routes In Sierra Nevada

Routes recording Red-breasted Nuthatch in Sierra Nevada.
LumberyardCALIFORNIA742024
Lassen ParkCALIFORNIA471989
WestvilleCALIFORNIA472024
GoumazCALIFORNIA372011
Hat CreekCALIFORNIA342018
Meadow ValleyCALIFORNIA282024
PlacervilleCALIFORNIA262024
Forest HillCALIFORNIA242022
StrawberryCALIFORNIA242019
RivertonCALIFORNIA232023
Forest Hill 2CALIFORNIA232005
ChesterCALIFORNIA222017
Butte MeadowCALIFORNIA212014
DownievilleCALIFORNIA212024
JohnsvilleCALIFORNIA202024
Greenhorn MtCALIFORNIA202008
Little TruckeeCALIFORNIA172023
Tahoe NfCALIFORNIA161994
Tuolumne GroveCALIFORNIA152024
Pollock PinesCALIFORNIA152024
Pine MountainCALIFORNIA132017
GeneseeCALIFORNIA102024
Cottage SpgsCALIFORNIA91975
Silver CityCALIFORNIA82013
SattleyCALIFORNIA72019

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