BirdAnalyst
BBS Route · Maine · BCR 14

Hancock Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 137 species recorded across 31 survey years, still active.

137Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2024Span
7Observers

Bird Species Found on Maine Hancock

Top 40 of 137 species by most recent count. Each links to its species trend.

Species recorded on the Hancock 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
American CrowCorvidae452024+21%1971
Red-eyed VireoVireonidae392024+49%1971
OvenbirdParulidae282024+88%1971
American RobinTurdidae232024-64%1971
Common YellowthroatParulidae19202411×1971
Song SparrowPasserellidae182024-35%1971
Black-capped ChickadeeParidae162024+45%1972
American GoldfinchFringillidae152024+21%1971
Yellow-bellied SapsuckerPicidae132024+67%1976
Gray CatbirdMimidae122024-49%1971
Mourning DoveColumbidae112024+225%1971
Cedar WaxwingBombycillidae102024+311%1971
Eastern PhoebeTyrannidae92024+122%1972
American RedstartParulidae92012-38%1971
Alder FlycatcherTyrannidae82024-11%1974
Blue JayCorvidae82024-54%1971
Chipping SparrowPasserellidae82024-21%1971
Hermit ThrushTurdidae82024-50%1971
Hairy WoodpeckerPicidae82024+83%1974
Northern CardinalCardinalidae82024+350%1999
Chestnut-sided WarblerParulidae72024-45%1971
American Black DuckAnatidae71998-18%1992
Purple FinchFringillidae62024-50%1971
Northern ParulaParulidae62024+500%1971
Bonaparte's GullLaridae61986n/an/a
KilldeerCharadriidae51995+100%1972
Chimney SwiftApodidae52024-24%1971
Red-winged BlackbirdIcteridae52024-79%1971
Common GrackleIcteridae52024-45%1971
Magnolia WarblerParulidae52024+25%1976
Pine SiskinFringillidae52012-48%1987
Eastern BluebirdTurdidae52024+50%1995
Savannah SparrowPasserellidae42024-29%1974
Barn SwallowHirundinidae41997-80%1971
Blue-headed VireoVireonidae42024+43%1975
Bay-breasted WarblerParulidae42000+100%1995
Double-crested CormorantPhalacrocoracidae42024+333%1979
Pine WarblerParulidae42024+100%1994
Downy WoodpeckerPicidae32024+33%1971
Common RavenCorvidae32024-71%1971

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