BirdAnalyst
BBS Route · Maine · BCR 14

Brownfield 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 88 species recorded across 15 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 →
15Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2010–2025Span
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 VireoVireonidae442025+40%2012
Eastern PhoebeTyrannidae172025+13%2012
American CrowCorvidae162025+38%2012
OvenbirdParulidae162025-44%2012
Tufted TitmouseParidae152025+142%2012
Pine WarblerParulidae142025+71%2012
Black-capped ChickadeeParidae132025-17%2012
American RobinTurdidae122025-37%2012
Blue JayCorvidae102025-10%2012
Chipping SparrowPasserellidae102025-58%2012
VeeryTurdidae102025+0%2012
Song SparrowPasserellidae92025+58%2012
Common YellowthroatParulidae92025-15%2012
Mourning DoveColumbidae82025-6%2012
Barn SwallowHirundinidae72013+133%2010
American RedstartParulidae62025-9%2012
Chestnut-sided WarblerParulidae62025+400%2013
European StarlingSturnidae42022-33%2010
American GoldfinchFringillidae42025-79%2012
Northern CardinalCardinalidae42025+200%2013
Cedar WaxwingBombycillidae42019-57%2012
Northern ParulaParulidae42025+114%2013
Northern House WrenTroglodytidae42025+100%2016
Red CrossbillFringillidae42024n/an/a
Black-and-white WarblerParulidae32025+0%2012
Black-throated Blue WarblerParulidae32025-14%2012
White-breasted NuthatchSittidae32025-27%2012
Hermit ThrushTurdidae32025-62%2012
Yellow-bellied SapsuckerPicidae32025+75%2013
Common GrackleIcteridae32022+25%2015
Tree SwallowHirundinidae32025+0%2014
Great Blue HeronArdeidae32017+200%2013
Hooded MerganserAnatidae32021n/an/a
Chimney SwiftApodidae22023-57%2012
Eastern Wood-PeweeTyrannidae22025+17%2013
Least FlycatcherTyrannidae22023+50%2013
Common RavenCorvidae22025+133%2013
White-throated SparrowPasserellidae22018+0%2012
Scarlet TanagerCardinalidae22025-25%2012
Blackburnian WarblerParulidae22025+14%2013

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