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Species · Massachusetts · BBS 2025 Release · 1966–2024

Wood Thrush Population Trend in Massachusetts

All statesForest birds

Wood Thrush in Massachusetts has fallen sharply: down 66% on the route-weighted index since 1968.

-66%Since 1968
30Routes In State
58Years

Notable Wood Thrush Trends in Massachusetts

long arc declinecomputed index

Wood Thrush has fallen sharply in Massachusetts: down 66% on the route-weighted index since 1968.

Wood Thrush Population Forecast in Massachusetts

If the recent trend holds, Wood Thrush in Massachusetts is projected to fall about 76% by 2029 — from 3.5 in 2024 to a central estimate of 0.83 (95% range 0.00–5.3). A 5-year backtest shows a typical error of ±42.9%, with 100% of held-out values landing inside the 95% band.

-76%Change by 2029
0.83Projected 2029 index
0.00–5.395% range
±42.9%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
20251.90.006.4
20261.60.006.1
20271.30.005.8
20281.10.005.6
20290.830.005.3

Wood Thrush Survey Routes in Massachusetts

Routes recording Wood Thrush in Massachusetts.
Cummington1720141968
Princeton1519761969
Pittsfield1420161967
Belchertown1120241967
Cummington 21020242015
Hancock920151997
N Oxford720241968
Warren620091968
Cheshire619941969
S Barre520241968
Warren 2520242010
Sheffield420221969
Brockton320161967
N Orange320241968
Holden320241977
Chilmark219831969
Wellfleet219961970
Newburyport220211967
Chesterfield220241967
Monterey220242019
E Dennis120041967
Marion120241966
Prattville120181966
Maynard120211967
Littleton120241967

Wood Thrush Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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