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Species · Utah · BBS 2025 Release · 1966–2024

Black-headed Grosbeak Population Trend in Utah

All statesGeneralists

Black-headed Grosbeak in Utah has surged: up 205% on the route-weighted index since 1970.

+205%Since 1970
78Routes In State
51Years

Notable Black-headed Grosbeak Trends in Utah

long arc increasecomputed index

Black-headed Grosbeak has surged in Utah: up 205% on the route-weighted index since 1970.

Black-headed Grosbeak Population Forecast in Utah

If the recent trend holds, Black-headed Grosbeak in Utah is projected to rise about 15% by 2029 — from 1.7 in 2024 to a central estimate of 1.9 (95% range 1.2–2.7). A 5-year backtest shows a typical error of ±35.5%, with 80% of held-out values landing inside the 95% band.

+15%Change by 2029
1.9Projected 2029 index
1.2–2.795% range
±35.5%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
20251.81.12.6
20261.91.12.6
20271.91.12.6
20281.91.22.7
20291.91.22.7

Black-headed Grosbeak Survey Routes in Utah

Routes recording Black-headed Grosbeak in Utah.
Main Canyon1820241989
Moab1420241986
Aneth1120241993
Beck 21020181990
Ant Flat-Ogden Can920231994
La Sal 2920062003
Beck819871971
Hardware Ranch820231994
Monticello820241999
Moon Lake 2720232004
Navajo Lake620241969
Jensen620242002
Gooseberry620241994
Newcastle620221997
Alton620111997
La Sal 3620242007
Beaver520241968
Uintah Nf519941990
Richfield520191994
Kamas520192005
Fayette420211993
Heber Mtn.420221996
Pine Creek420102010
Moquith Mtn320011997
Moon Lake320021995

Black-headed Grosbeak Population Trend in Other States

alaskaarizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexaswashingtonwyoming

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