BirdAnalyst
BBS Route · Maine · BCR 14

Clayton Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 16 survey years, no longer active.

107Species 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 →
16Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1977–2008Span
4Observers

Bird Species Found on Maine Clayton Lake

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Clayton Lake 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
White-throated SparrowPasserellidae842008+28%1983
American RobinTurdidae542008+97%1983
Red-eyed VireoVireonidae252008+41%1983
Magnolia WarblerParulidae202008+49%1983
Hermit ThrushTurdidae182008+380%1983
Common YellowthroatParulidae162008+117%1983
Winter WrenTroglodytidae162008+119%1983
Blue-headed VireoVireonidae142008+112%1983
Cliff SwallowHirundinidae101986-33%1977
Black-throated Blue WarblerParulidae82008+130%1986
American RedstartParulidae82008-33%1983
Yellow-bellied SapsuckerPicidae72008+725%1993
Northern ParulaParulidae72008-19%1983
Swainson's ThrushTurdidae72008-37%1983
Alder FlycatcherTyrannidae72008+100%1985
Lincoln's SparrowPasserellidae72001+260%1993
Common GrackleIcteridae62001+22%1983
Purple FinchFringillidae62001-66%1983
Bay-breasted WarblerParulidae52001-50%1983
OvenbirdParulidae52008-58%1983
Hairy WoodpeckerPicidae42001-25%1983
Cape May WarblerParulidae42008-46%1983
Chestnut-sided WarblerParulidae42008+114%1984
Blackpoll WarblerParulidae41992-20%1977
Red-breasted NuthatchSittidae42008+63%1983
Boreal ChickadeeParidae42001+14%1985
Canada GooseAnatidae41999+33%1992
Wilson's SnipeScolopacidae42001+250%1994
Philadelphia VireoVireonidae42001+300%1994
Belted KingfisherAlcedinidae32001+50%1994
Least FlycatcherTyrannidae32008+0%1983
Blue JayCorvidae32008-6%1983
Brown-headed CowbirdIcteridae31977n/an/a
Evening GrosbeakFringillidae32001-93%1983
Song SparrowPasserellidae32008+120%1985
Black-and-white WarblerParulidae32001-74%1984
Nashville WarblerParulidae32008-7%1983
Tennessee WarblerParulidae32008-88%1983
Blackburnian WarblerParulidae32008-47%1983
Northern WaterthrushParulidae32008-17%1983

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