BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Pygmy Nuthatch In Northern Rockies

All regionsNorthern RockiesForest birds

Pygmy Nuthatch in Northern Rockies has fallen sharply: down 53% on the route-weighted index since 1970.

-53%Since 1970
47Routes In Region
55Years

Notable Signals

long arc declinecomputed index

Pygmy Nuthatch has fallen sharply in Northern Rockies: down 53% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Pygmy Nuthatch in Northern Rockies is projected to stay roughly flat through 2029, near 0.24 (95% range 0.00–0.58). A 5-year backtest shows a typical error of ±27.1%, with 100% of held-out values landing inside the 95% band.

+5%Change by 2029
0.24Projected 2029 index
0.00–0.5895% range
±27.1%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
20250.240.000.59
20260.240.000.59
20270.240.000.58
20280.240.000.58
20290.240.000.58

Routes In Northern Rockies

Routes recording Pygmy Nuthatch in Northern Rockies.
Silver CreekOREGON182024
Donelly 2OREGON72022
Deer ParkWASHINGTON72015
Eagle RockOREGON61978
Spring LakeWASHINGTON61990
SilviesOREGON42023
L Pend O NwrWASHINGTON42023
Salmon RiverIDAHO32021
KalispellMONTANA32018
ArleeMONTANA32013
Pablo Res.MONTANA32007
SkalkahoMONTANA31997
AlbeeOREGON32022
Summit PrOREGON32024
TroyOREGON31995
DonnellyOREGON32004
AlturasIDAHO21968
FeathervilleIDAHO22005
NinemileMONTANA22024
Painted RockMONTANA21997
FloraOREGON22005
OchocoOREGON21981
WickiupOREGON21972
Mount VernonOREGON22008
Howard Mdws.OREGON22024

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