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

American Robin Population Trend in Iowa

All statesForest birds

American Robin in Iowa has surged: up 155% on the route-weighted index since 1969.

+155%Since 1969
39Routes In State
57Years

Notable American Robin Trends in Iowa

long arc increasecomputed index

American Robin has surged in Iowa: up 155% on the route-weighted index since 1969.

American Robin Population Forecast in Iowa

If the recent trend holds, American Robin in Iowa is projected to stay roughly flat through 2029, near 88 (95% range 77–100). A 5-year backtest shows a typical error of ±9.3%, with 100% of held-out values landing inside the 95% band.

+5%Change by 2029
88Projected 2029 index
77–10095% range
±9.3%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
2025847396
2026857497
2027867598
2028877699
20298877100

American Robin Survey Routes in Iowa

Routes recording American Robin in Iowa.
Panther31420241967
Red Rock14620241968
Mccallsburg12820241996
West Liberty11720241968
Lafayette9720242003
Sioux City9420241968
Bryant8820241967
Neola8620161968
Washington8520241967
Mt Hamill8420241967
Brooklyn8420221967
Scranton8420241967
Cedar Valley7819971967
College Spgs 27820232005
Washta7520141967
Gaza7420231969
Titonka7320241968
Tipton7220241993
College Spgs7120041967
Davis Corner6620241968
Rock Valley6520241968
Kanawha5820241967
Festina5720241968
Clare5620191967
Burchinal5420241995

American Robin Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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