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

Yellow-headed Blackbird Population Trend in Iowa

All statesGeneralists

Yellow-headed Blackbird in Iowa has declined: down 43% on the route-weighted index since 1970.

-43%Since 1970
18Routes In State
52Years

Notable Yellow-headed Blackbird Trends in Iowa

No notable trend signals for Yellow-headed Blackbird in Iowa. See the full index history below.

Yellow-headed Blackbird Population Forecast in Iowa

If the recent trend holds, Yellow-headed Blackbird in Iowa is projected to stay roughly flat through 2029, near 0.27 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±303.3%, with 100% of held-out values landing inside the 95% band.

-3%Change by 2029
0.27Projected 2029 index
0.00–1.295% range
±303.3%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
20250.300.001.3
20260.290.001.3
20270.280.001.2
20280.270.001.2
20290.270.001.2

Yellow-headed Blackbird Survey Routes in Iowa

Routes recording Yellow-headed Blackbird in Iowa.
Garner1819921971
Pierson620141993
Panther320241987
Hudson320091968
Kanawha320242019
Bryant220182018
Washington220091977
Sioux City220221969
Titonka120131983
Gaza120031977
Rock Valley119811971
Burchinal120232009
Brooklyn120122012
Williamsburg119971990
Scranton120171973
Washta119791979
Festina119841971
Davis Corner119891978

Yellow-headed Blackbird Population Trend in Other States

arizonacaliforniacoloradoidahoillinoisindianakansasmichiganminnesotamissourimontananebraskanevadanew-mexiconorth-dakotaohiooklahomaoregonsouth-dakotatexasutahwashingtonwisconsinwyoming

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