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Species · Maine · BBS 2025 Release · 1966–2024

Eastern Bluebird Population Trend in Maine

All statesForest birds

Eastern Bluebird in Maine has surged: up 199% on the route-weighted index since 1968.

+199%Since 1968
53Routes In State
56Years

Notable Eastern Bluebird Trends in Maine

long arc increasecomputed index

Eastern Bluebird has surged in Maine: up 199% on the route-weighted index since 1968.

Eastern Bluebird Population Forecast in Maine

If the recent trend holds, Eastern Bluebird in Maine is projected to fall about 48% by 2029 — from 2.2 in 2024 to a central estimate of 1.1 (95% range 0.45–1.8). A 5-year backtest shows a typical error of ±47.1%, with 20% of held-out values landing inside the 95% band.

-48%Change by 2029
1.1Projected 2029 index
0.45–1.895% range
±47.1%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
20251.10.381.8
20261.10.401.8
20271.10.411.8
20281.10.431.8
20291.10.451.8

Eastern Bluebird Survey Routes in Maine

Routes recording Eastern Bluebird in Maine.
Kittery Pt920242005
Turner919971972
Bowdoin Ctr620211991
Searsport620242002
Hancock520241992
Northfield 2520211993
Cape Neddick420241998
Westbrook420241985
Freedom420211973
Rome420231997
Harmony320241967
Eastbrook320241971
Reeds220241990
Otisfield Gr220141966
East Troy220191992
Warren219891975
Aurora220211990
Deblois219981983
Moose River220021998
Cambridge220141967
Medway219981998
Hudson219981975
Forest Sta219671967
Stacyville220222022
Cornville220242012

Eastern Bluebird Population Trend in Other States

alabamaarizonaarkansascoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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