BirdAnalyst
BBS Route · Maine · BCR 14

East Troy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 126 species recorded across 30 survey years, still active.

126Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2021Span
6Observers

Bird Species Found on Maine East Troy

Top 40 of 126 species by most recent count. Each links to its species trend.

Species recorded on the East Troy route.
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 →TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Song SparrowPasserellidae462021+10%1976
Common YellowthroatParulidae462021+26%1976
American CrowCorvidae422021+111%1976
Red-eyed VireoVireonidae422021+158%1976
Bank SwallowHirundinidae391996-46%1976
Chestnut-sided WarblerParulidae372021+40%1976
OvenbirdParulidae342021+136%1976
American GoldfinchFringillidae332021+281%1976
American RobinTurdidae322021+2%1976
Mourning DoveColumbidae29202113×1976
Chipping SparrowPasserellidae272021+886%1976
Eastern PhoebeTyrannidae252021+400%1977
Red-winged BlackbirdIcteridae242021+10%1976
BobolinkIcteridae232021-45%1976
Blue JayCorvidae222021+178%1976
Alder FlycatcherTyrannidae212021+314%1976
Black-and-white WarblerParulidae202021+148%1977
Black-capped ChickadeeParidae192021+73%1976
Northern ParulaParulidae192021+429%1977
European StarlingSturnidae182021-84%1976
Yellow WarblerParulidae182021+79%1976
Gray CatbirdMimidae132021+32%1976
Turkey VultureCathartidae112005+250%1989
American RedstartParulidae92021+5%1976
VeeryTurdidae92021-22%1976
Pine WarblerParulidae92019+400%2005
Common GrackleIcteridae82021+11%1976
White-throated SparrowPasserellidae82021-70%1976
Black-throated Green WarblerParulidae72021+85%1976
Great Crested FlycatcherTyrannidae72021+67%1983
Yellow-bellied SapsuckerPicidae62021+425%1976
Savannah SparrowPasserellidae62021+73%1977
Winter WrenTroglodytidae62021+350%1977
Prairie WarblerParulidae62021+14%2017
Tree SwallowHirundinidae52021-64%1976
Purple FinchFringillidae52018+267%1977
Hermit ThrushTurdidae42021+329%1981
Least FlycatcherTyrannidae42021-61%1977
White-breasted NuthatchSittidae42021+420%1983
Cedar WaxwingBombycillidae42021+54%1981

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.