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Species · Wyoming · BBS 2025 Release · 1966–2024

Black-headed Grosbeak Population Trend in Wyoming

All statesGeneralists

Black-headed Grosbeak in Wyoming has surged: up 159% on the route-weighted index since 1970.

+159%Since 1970
68Routes In State
56Years

Notable Black-headed Grosbeak Trends in Wyoming

long arc increasecomputed index

Black-headed Grosbeak has surged in Wyoming: up 159% on the route-weighted index since 1970.

Black-headed Grosbeak Population Forecast in Wyoming

If the recent trend holds, Black-headed Grosbeak in Wyoming is projected to stay roughly flat through 2029, near 0.77 (95% range 0.23–1.3). A 5-year backtest shows a typical error of ±19%, with 100% of held-out values landing inside the 95% band.

+3%Change by 2029
0.77Projected 2029 index
0.23–1.395% range
±19%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
20250.750.221.3
20260.760.221.3
20270.760.231.3
20280.760.231.3
20290.770.231.3

Black-headed Grosbeak Survey Routes in Wyoming

Routes recording Black-headed Grosbeak in Wyoming.
Buckskin Mtn1520211992
Alpine1220241979
Wilson1120241979
Bald Mtn720071999
Ryan Park719931993
Dubois620241973
Dayton620241980
Moskee 3520242022
Moskee 2520212002
Sundance420241975
Crazy Woman420241995
Moskee420011980
Fontenelle320241982
Brookhurst320161968
Yoder320151986
Moose320231978
Walcott320001985
Cody220241988
Midvale220222022
Redbird219881968
Savery219951989
Riverside220191998
Clark220241991
Schoonover219901990
Arvada220241986

Black-headed Grosbeak Population Trend in Other States

alaskaarizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashington

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