BirdAnalyst
Species · BCR 32 · BBS 2025 Release · 1966–2024

Pygmy Nuthatch In Coastal California

All regionsCoastal CaliforniaForest birds

Pygmy Nuthatch in Coastal California has fallen sharply: down 66% on the route-weighted index since 1970.

-66%Since 1970
29Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Pygmy Nuthatch has fallen sharply in Coastal California: down 66% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Pygmy Nuthatch in Coastal California is projected to rise about 56% by 2029 — from 0.53 in 2024 to a central estimate of 0.83 (95% range 0.00–2.7). A 5-year backtest shows a typical error of ±90%, with 100% of held-out values landing inside the 95% band.

+56%Change by 2029
0.83Projected 2029 index
0.00–2.795% range
±90%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
20250.940.002.8
20260.910.002.8
20270.880.002.8
20280.860.002.8
20290.830.002.7

Routes In Coastal California

Routes recording Pygmy Nuthatch in Coastal California.
ValyermoCALIFORNIA452018
Mt LagunaCALIFORNIA411987
Big BearCALIFORNIA371986
Mt PinosCALIFORNIA162004
Lake HemetCALIFORNIA151986
Lake Hemet 2CALIFORNIA92023
Lockwood ValCALIFORNIA61987
Waterman GapCALIFORNIA62024
Cleveland NfCALIFORNIA62018
FairfaxCALIFORNIA52024
Green ValleyCALIFORNIA52023
TehamaCALIFORNIA51992
WoodlandsCALIFORNIA52024
Point ReyesCALIFORNIA42021
Anza 2CALIFORNIA42024
CalpellaCALIFORNIA31980
ColmaCALIFORNIA31972
Mt Pinos 2CALIFORNIA32024
Glen EllenCALIFORNIA32001
Cleveland Nf 2CALIFORNIA32022
TujungaCALIFORNIA21971
FallsvaleCALIFORNIA21975
Glen Ellen 2CALIFORNIA22015
PescaderoCALIFORNIA22024
MoragaCALIFORNIA12018

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