BirdAnalyst
BBS Route · Maine · BCR 14

Cooper Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 128 species recorded across 26 survey years, still active.

128Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1975–2021Span
3Observers

Bird Species Found on Maine Cooper

Top 40 of 128 species by most recent count. Each links to its species trend.

Species recorded on the Cooper 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
Red-eyed VireoVireonidae672021-28%1977
OvenbirdParulidae452021-21%1977
Northern ParulaParulidae332021-1%1977
White-throated SparrowPasserellidae302021-69%1977
Black-throated Green WarblerParulidae302021-32%1977
American CrowCorvidae252021+237%1977
American RobinTurdidae252021-24%1977
Hermit ThrushTurdidae242021-46%1977
Cedar WaxwingBombycillidae202021+39%1977
American RedstartParulidae202021-26%1977
Black-and-white WarblerParulidae172021-13%1977
Common YellowthroatParulidae172021-53%1977
Chipping SparrowPasserellidae122021-54%1977
Common RavenCorvidae112021+46%1977
Alder FlycatcherTyrannidae102021+38%1977
Song SparrowPasserellidae102021-3%1977
Blue-headed VireoVireonidae102021-32%1977
Chestnut-sided WarblerParulidae82021-28%1977
Black-capped ChickadeeParidae82021-67%1977
House SparrowPasseridae81981+150%1977
Mourning DoveColumbidae72021+233%1977
Eastern PhoebeTyrannidae72021+175%1978
Blue JayCorvidae72021-22%1977
Pine WarblerParulidae72021+300%2010
American GoldfinchFringillidae62021-40%1977
Savannah SparrowPasserellidae62021+0%1977
Nashville WarblerParulidae62021-86%1977
Winter WrenTroglodytidae62021-71%1977
Red-breasted NuthatchSittidae62021+6%1978
Black-backed WoodpeckerPicidae61981+500%1978
Magnolia WarblerParulidae52021-75%1977
Pileated WoodpeckerPicidae42021+120%1977
Blackburnian WarblerParulidae42021-88%1977
Evening GrosbeakFringillidae42003-9%1978
Barn SwallowHirundinidae32010-91%1977
Golden-crowned KingletRegulidae32021-29%1977
Bay-breasted WarblerParulidae32021-72%1978
Rusty BlackbirdIcteridae31979n/an/a
Common LoonGaviidae22019-46%1977
Herring GullLaridae22005-52%1977

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