BirdAnalyst
BBS Route · Maine · BCR 14

Brownfield 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 88 species recorded across 14 survey years, still active.

88Species 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 →
2010–2024Span
1Observers

Bird Species Found on Maine Brownfield 2

Top 40 of 88 species by most recent count. Each links to its species trend.

Species recorded on the Brownfield 2 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 VireoVireonidae472024+43%2012
Black-capped ChickadeeParidae212024+0%2012
American CrowCorvidae162024+41%2012
Eastern PhoebeTyrannidae102024+3%2012
OvenbirdParulidae102024-36%2012
American RobinTurdidae102024-35%2012
Pine WarblerParulidae92024+81%2012
Tufted TitmouseParidae92024+100%2012
Chipping SparrowPasserellidae82024-61%2012
Yellow-bellied SapsuckerPicidae82024+63%2013
Barn SwallowHirundinidae72013+133%2010
Mourning DoveColumbidae62024+18%2012
Blue JayCorvidae62024-21%2012
Northern ParulaParulidae62024+100%2013
Common YellowthroatParulidae62024-26%2012
Song SparrowPasserellidae52024+50%2012
American RedstartParulidae52024+9%2012
VeeryTurdidae52024-47%2012
Chestnut-sided WarblerParulidae52024+333%2013
Brown CreeperCerthiidae52024+120%2018
European StarlingSturnidae42022-33%2010
Cedar WaxwingBombycillidae42019-57%2012
Black-and-white WarblerParulidae42024+15%2012
Black-throated Green WarblerParulidae42024-6%2012
Gray CatbirdMimidae42024+7%2012
Northern House WrenTroglodytidae42024+40%2016
White-breasted NuthatchSittidae42024-33%2012
Great Crested FlycatcherTyrannidae42024+100%2014
Red CrossbillFringillidae42024n/an/a
Common RavenCorvidae32023+200%2013
Winter WrenTroglodytidae32024+100%2015
Red-breasted NuthatchSittidae32024-10%2013
Hermit ThrushTurdidae32024-54%2012
Common GrackleIcteridae32022+25%2015
Great Blue HeronArdeidae32017+200%2013
Hooded MerganserAnatidae32021n/an/a
Chimney SwiftApodidae22023-57%2012
Least FlycatcherTyrannidae22023+50%2013
American GoldfinchFringillidae22024-65%2012
White-throated SparrowPasserellidae22018+0%2012

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