BirdAnalyst
BBS Route · Maine · BCR 14

Horse Mtn Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 108 species recorded across 28 survey years, still active.

108Species 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 →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1983–2011Span
2Observers

Bird Species Found on Maine Horse Mtn

Top 40 of 108 species by most recent count. Each links to its species trend.

Species recorded on the Horse Mtn 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
OvenbirdParulidae392011-38%1985
Red-eyed VireoVireonidae282011-15%1985
American RobinTurdidae272011-29%1985
Northern ParulaParulidae222011+107%1985
American RedstartParulidae172011-69%1985
Black-throated Blue WarblerParulidae162011+230%1986
White-throated SparrowPasserellidae152011-59%1985
Least FlycatcherTyrannidae132011-35%1985
Magnolia WarblerParulidae122011+7%1985
Yellow-bellied SapsuckerPicidae112011-10%1985
VeeryTurdidae102011-74%1985
Common YellowthroatParulidae92011-42%1985
Black-capped ChickadeeParidae92011-53%1985
Hermit ThrushTurdidae92011+111%1986
Blackburnian WarblerParulidae82011-6%1985
Winter WrenTroglodytidae82011+3%1985
Red-breasted NuthatchSittidae72011-10%1985
Black-and-white WarblerParulidae62011+18%1985
Nashville WarblerParulidae62011+13%1986
Black-throated Green WarblerParulidae62011-23%1986
Swainson's ThrushTurdidae62011-76%1985
Cedar WaxwingBombycillidae52011-59%1985
American Black DuckAnatidae52010+250%1987
Golden-crowned KingletRegulidae52010+56%1986
Eastern Wood-PeweeTyrannidae42011-63%1985
Blue JayCorvidae42011-55%1985
Common RavenCorvidae42011-29%1985
Cliff SwallowHirundinidae41990-68%1986
Alder FlycatcherTyrannidae42011+133%1994
Blue-headed VireoVireonidae32011-35%1985
Northern WaterthrushParulidae32011-50%1985
Yellow-bellied FlycatcherTyrannidae31997+100%1992
Common LoonGaviidae22011-29%1985
Common MerganserAnatidae22010-43%1992
Great Blue HeronArdeidae21990-29%1985
Downy WoodpeckerPicidae22011-60%1986
Pileated WoodpeckerPicidae22011+14%1985
Great Crested FlycatcherTyrannidae22011-38%1985
Olive-sided FlycatcherTyrannidae22011-20%2008
Baltimore OrioleIcteridae21984+100%1983

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