BirdAnalyst
Species · Wyoming · BBS 2025 Release · 1966–2024

Fox Sparrow Population Trend in Wyoming

All statesGeneralists

Fox Sparrow in Wyoming has declined: down 42% on the route-weighted index since 1970.

-42%Since 1970
20Routes In State
48Years

Notable Fox Sparrow Trends in Wyoming

No notable trend signals for Fox Sparrow in Wyoming. See the full index history below.

Fox Sparrow Population Forecast in Wyoming

If the recent trend holds, Fox Sparrow in Wyoming is projected to fall about 48% by 2029 — from 0.42 in 2024 to a central estimate of 0.22 (95% range 0.00–0.57). A 5-year backtest shows a typical error of ±68.6%, with 80% of held-out values landing inside the 95% band.

-48%Change by 2029
0.22Projected 2029 index
0.00–0.5795% range
±68.6%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
20250.210.000.57
20260.210.000.57
20270.220.000.57
20280.220.000.57
20290.220.000.57

Fox Sparrow Survey Routes in Wyoming

Routes recording Fox Sparrow in Wyoming.
Buckskin Mtn2120212015
Big Sandy1120242008
Alpine820241989
Wilson620241979
Colter Bay519991968
Colter Bay 2520242021
Otto419871970
Soda Lake320242023
Fox Park320241993
Ne Entrance219911991
Boulder220072007
Moran220162002
Mtn View219901980
Dubois119741974
Fontenelle120182011
Moose120231979
Horse Creek120241989
Diamondville119781978
Green River119821982
Sybille Cyn119801980

Fox Sparrow Population Trend in Other States

alaskacaliforniacoloradoidahomainemontananevadaoregonutahwashington

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