BirdAnalyst
BBS Route · Maine · BCR 14

Wilson Mills Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 122 species recorded across 42 survey years, still active.

122Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1983–2025Span
4Observers

Bird Species Found on Maine Wilson Mills

Top 40 of 122 species by most recent count. Each links to its species trend.

Species recorded on the Wilson Mills 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 VireoVireonidae452025-5%1985
Swainson's ThrushTurdidae322025-33%1985
White-throated SparrowPasserellidae252025-80%1985
Red-breasted NuthatchSittidae242025+6%1985
Northern ParulaParulidae212025+72%1985
Magnolia WarblerParulidae182025-20%1985
OvenbirdParulidae172025+2%1985
Black-capped ChickadeeParidae152025-42%1985
Winter WrenTroglodytidae142025-5%1985
American CrowCorvidae132025-58%1985
Hermit ThrushTurdidae122025+100%1985
Blackburnian WarblerParulidae102025-4%1985
Black-throated Green WarblerParulidae102025+169%1985
American RobinTurdidae102025-53%1985
Blue-headed VireoVireonidae92025+144%1985
Wood DuckAnatidae71994n/an/a
Chipping SparrowPasserellidae62025-89%1985
Nashville WarblerParulidae62025-65%1985
American KestrelFalconidae51993+200%1984
Yellow-bellied SapsuckerPicidae52025-40%1985
Least FlycatcherTyrannidae52025-57%1985
Blue JayCorvidae42025-62%1985
Common RavenCorvidae42025-6%1985
Common YellowthroatParulidae42025-72%1985
Canada WarblerParulidae42024-18%1985
American RedstartParulidae42025-75%1985
Ruby-crowned KingletRegulidae42025-56%1986
Common GrackleIcteridae32025-62%1985
Evening GrosbeakFringillidae32007-11%1985
Pine SiskinFringillidae32018-69%1986
Tree SwallowHirundinidae32025-73%1985
Cedar WaxwingBombycillidae32025-81%1985
Cliff SwallowHirundinidae32003-57%1993
Alder FlycatcherTyrannidae32025+14%1988
Northern WaterthrushParulidae32025-20%1989
Red CrossbillFringillidae32024-29%2002
Downy WoodpeckerPicidae22025-57%1985
Pileated WoodpeckerPicidae22025+60%1985
Yellow-bellied FlycatcherTyrannidae22025+14%1985
Purple FinchFringillidae22025-79%1985

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.