BirdAnalyst
BBS Route · Maine · BCR 14

Big Twenty Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 14 survey years, no longer active.

80Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2008Span
1Observers

Bird Species Found on Maine Big Twenty

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Big Twenty 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 SparrowPasserellidae282008-33%1995
Magnolia WarblerParulidae272008+189%1995
American RobinTurdidae192008+43%1995
Nashville WarblerParulidae182008-20%1995
Ruby-crowned KingletRegulidae172008+9%1995
Red-eyed VireoVireonidae162008+139%1996
Golden-crowned KingletRegulidae132008+58%1995
Blue JayCorvidae122008+260%1995
Swainson's ThrushTurdidae122008+6%1995
White-winged CrossbillFringillidae92007+50%1995
Hermit ThrushTurdidae92008+16%1995
Blue-headed VireoVireonidae82008+6%1995
Alder FlycatcherTyrannidae72008-54%1995
Philadelphia VireoVireonidae52007+180%1996
American RedstartParulidae52008-53%1995
Evening GrosbeakFringillidae42008-22%1995
Lincoln's SparrowPasserellidae42007+10%1995
Black-throated Blue WarblerParulidae42008-14%1996
Common YellowthroatParulidae42008-59%1995
Winter WrenTroglodytidae42008-75%1995
Wilson's SnipeScolopacidae32008+20%2000
Canada JayCorvidae32008-43%1996
Purple FinchFringillidae32008-54%1997
Bay-breasted WarblerParulidae32008+75%1996
Brown CreeperCerthiidae32007+75%1999
Red-tailed HawkAccipitridae32002+100%1997
Ruby-throated HummingbirdTrochilidae32007+0%1999
Northern WaterthrushParulidae32008-40%1997
Boreal ChickadeeParidae32007+225%1997
Yellow-bellied SapsuckerPicidae22008-27%1997
Least FlycatcherTyrannidae22008+33%1996
Northern ParulaParulidae22008+17%1995
Chestnut-sided WarblerParulidae22007-82%1995
Mourning WarblerParulidae22008-53%1995
OvenbirdParulidae22008-33%1996
Yellow-bellied FlycatcherTyrannidae22008-38%1997
Common RavenCorvidae22007+10%1998
Black-throated Green WarblerParulidae22007-22%1997
Palm WarblerParulidae22007-50%1997
VeeryTurdidae22007+0%1997

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