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

Yellow Warbler Population Trend in Massachusetts

All statesForest birds

Yellow Warbler in Massachusetts has surged: up 108% on the route-weighted index since 1968.

+108%Since 1968
32Routes In State
58Years

Notable Yellow Warbler Trends in Massachusetts

long arc increasecomputed index

Yellow Warbler has surged in Massachusetts: up 108% on the route-weighted index since 1968.

Yellow Warbler Population Forecast in Massachusetts

If the recent trend holds, Yellow Warbler in Massachusetts is projected to fall about 21% by 2029 — from 13 in 2024 to a central estimate of 10 (95% range 7.1–13). A 5-year backtest shows a typical error of ±16.9%, with 80% of held-out values landing inside the 95% band.

-21%Change by 2029
10Projected 2029 index
7.1–1395% range
±16.9%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
20259.96.913
202610.06.913
2027107.013
2028107.013
2029107.113

Yellow Warbler Survey Routes in Massachusetts

Routes recording Yellow Warbler in Massachusetts.
Chesterfield3320241967
Prattville3220191966
Marion3120241966
S Barre1920241968
Wellfleet 21720242016
Brockton1420191967
Belchertown1420241967
Monterey1420242019
N Orange1320241968
Cheshire1319941969
Gay Head1320241996
N. Andover1120241995
Warren 21020242010
Wellfleet920071966
E Pepperell919941966
Sheffield820221969
Holden720241977
Hancock720151998
E Dennis620211967
Cummington 2620242015
Newburyport520221967
Mansfield520241974
Princeton519761969
Warren520091968
Cummington420131968

Yellow Warbler Population Trend in Other States

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

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