BirdAnalyst
BBS Route · Maine · BCR 14

East Troy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 29 survey years, still active.

124Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2019Span
6Observers

Bird Species Found on Maine East Troy

Top 40 of 124 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
Bank SwallowHirundinidae391996-46%1976
Song SparrowPasserellidae362019+5%1976
OvenbirdParulidae352019+140%1976
Mourning DoveColumbidae312019+971%1976
American CrowCorvidae282019+104%1976
Cedar WaxwingBombycillidae282019+120%1981
Common YellowthroatParulidae272019+2%1976
American RobinTurdidae272019-1%1976
American GoldfinchFringillidae262019+262%1976
Chipping SparrowPasserellidae232019+757%1976
Chestnut-sided WarblerParulidae222019+0%1976
European StarlingSturnidae212019-74%1976
Red-eyed VireoVireonidae212019+140%1976
Red-winged BlackbirdIcteridae192019+8%1976
Gray CatbirdMimidae172019+73%1976
Black-and-white WarblerParulidae162019+138%1977
Blue JayCorvidae152019+106%1976
Yellow WarblerParulidae152019+53%1976
Black-capped ChickadeeParidae112019+121%1976
Turkey VultureCathartidae112005+250%1989
House SparrowPasseridae102017-42%1976
Eastern PhoebeTyrannidae102019+390%1977
Hermit ThrushTurdidae92019+414%1981
Pine WarblerParulidae92019+400%2005
Northern ParulaParulidae82019+300%1977
Yellow-bellied SapsuckerPicidae72019+375%1976
Common GrackleIcteridae72019+39%1976
Black-throated Green WarblerParulidae72019+115%1976
Alder FlycatcherTyrannidae62019+100%1976
BobolinkIcteridae62019-60%1976
American RedstartParulidae62019-32%1976
Hairy WoodpeckerPicidae62019+186%1983
Common RavenCorvidae62019+36%1981
Red-breasted NuthatchSittidae62019+22%1977
VeeryTurdidae52019-27%1976
Purple FinchFringillidae52018+267%1977
White-throated SparrowPasserellidae42019-73%1976
White-breasted NuthatchSittidae42019+380%1983
Blue-headed VireoVireonidae42019+50%1983
House FinchFringillidae42018+100%1993

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.