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

Black-capped Chickadee Population Trend in Iowa

All statesForest birds

Black-capped Chickadee in Iowa has declined: down 41% on the route-weighted index since 1969.

-41%Since 1969
38Routes In State
57Years

Notable Black-capped Chickadee Trends in Iowa

No notable trend signals for Black-capped Chickadee in Iowa. See the full index history below.

Black-capped Chickadee Population Forecast in Iowa

If the recent trend holds, Black-capped Chickadee in Iowa is projected to rise about 28% by 2029 — from 0.95 in 2024 to a central estimate of 1.2 (95% range 0.20–2.2). A 5-year backtest shows a typical error of ±35.7%, with 100% of held-out values landing inside the 95% band.

+28%Change by 2029
1.2Projected 2029 index
0.20–2.295% range
±35.7%Backtest error
19672029
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
20251.30.232.3
20261.20.222.3
20271.20.212.3
20281.20.202.2
20291.20.202.2

Black-capped Chickadee Survey Routes in Iowa

Routes recording Black-capped Chickadee in Iowa.
Alice819991967
Red Rock620241968
Wales620161968
Hudson620221968
Washington420221967
Clare420181975
Davis Corner420211980
Bedford320151969
Maquoketa320231968
Sioux City320241968
Rock Valley320151968
Melrose220241975
West Liberty220241969
Brooklyn220101967
Desmoines219781968
Prairieburg220181979
Dinsdale220241969
Washta220141967
Festina220241968
Garner219881975
Tipton220171993
Mccallsburg220192010
Mt Hamill120241967
Exline120241974
College Spgs120041967

Black-capped Chickadee Population Trend in Other States

alaskacaliforniacoloradoconnecticutidahoillinoisindianakansasmainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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