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

Red-winged Blackbird Population Trend in Maine

All statesGeneralists

Red-winged Blackbird in Maine has fallen sharply: down 66% on the route-weighted index since 1968.

-66%Since 1968
73Routes In State
58Years

Notable Red-winged Blackbird Trends in Maine

long arc declinecomputed index

Red-winged Blackbird has fallen sharply in Maine: down 66% on the route-weighted index since 1968.

Red-winged Blackbird Population Forecast in Maine

If the recent trend holds, Red-winged Blackbird in Maine is projected to fall about 62% by 2029 — from 8.2 in 2024 to a central estimate of 3.1 (95% range 0.00–10). A 5-year backtest shows a typical error of ±49.7%, with 80% of held-out values landing inside the 95% band.

-62%Change by 2029
3.1Projected 2029 index
0.00–1095% range
±49.7%Backtest error
19662029
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
20254.30.0011
20264.00.0011
20273.70.0011
20283.40.0011
20293.10.0010

Red-winged Blackbird Survey Routes in Maine

Routes recording Red-winged Blackbird in Maine.
Biddeford4120191973
Benton3919801971
Harmony3720241967
Turner3620101972
Washburn3020051979
Jefferson2620101991
Ft Fairfield2420051993
St David2420051982
Cornville2420242012
Otisfield Gr2320151966
Kittery Pt1920241966
East Troy1920191972
Warren1919901973
Cambridge1920141967
Cape Neddick1720241972
Ashland1620081980
Hermon1520191966
Charleston1120191975
Northfield1019811976
Boundary1020161993
Newcastle920241971
Waite919771977
Ludlow919981968
Greenwood820241966
Freedom820221973

Red-winged Blackbird Population Trend in Other States

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

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