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Species · Massachusetts · BBS 2025 Release · 1966–2024

Golden-winged Warbler Population Trend in Massachusetts

All statesForest birds

Golden-winged Warbler in Massachusetts has fallen sharply: down 58% on the route-weighted index since 1969.

-58%Since 1969TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
10Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
16YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Golden-winged Warbler Trends in MassachusettsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Golden-winged Warbler has fallen sharply in Massachusetts: down 58% on the route-weighted index since 1969.

Golden-winged Warbler Survey Routes in Massachusetts

Routes recording Golden-winged Warbler in Massachusetts.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Newburyport219781967
N Oxford219941994
Maynard119881969
E Pepperell119691969
Belchertown119681968
Warren119741969
S Barre119921992
Cheshire119871976
Pittsfield119671967
Sheffield119791969

Golden-winged Warbler Population Trend in Other States

connecticutgeorgiaillinoisindianakentuckymarylandmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinaohiopennsylvaniatennesseevermontvirginiawest-virginiawisconsin

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