BirdAnalyst
BBS Route · Maine · BCR 14

Northfield 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 102 species recorded across 15 survey years, still active.

102Species 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 →
1992–2022Span
2Observers

Bird Species Found on Maine Northfield 2

Top 40 of 102 species by most recent count. Each links to its species trend.

Species recorded on the Northfield 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 VireoVireonidae242022+2%1994
OvenbirdParulidae222022-46%1994
American CrowCorvidae172022+246%1994
Blue JayCorvidae92022+23%1994
Cedar WaxwingBombycillidae82018-32%1994
Black-capped ChickadeeParidae82022-36%1994
American RobinTurdidae82022-64%1994
Common YellowthroatParulidae72022-50%1994
Hermit ThrushTurdidae72022-38%1994
Common RavenCorvidae52022-27%1994
Northern ParulaParulidae52022-77%1994
Eastern BluebirdTurdidae52021+33%2013
Wild TurkeyPhasianidae52022+100%2019
Philadelphia VireoVireonidae52022+100%2019
American BitternArdeidae41992n/an/a
European StarlingSturnidae42022+67%1998
Red-winged BlackbirdIcteridae42016+25%2012
Eastern PhoebeTyrannidae32022+8%1994
White-throated SparrowPasserellidae32022-65%1994
Chipping SparrowPasserellidae32022-69%1994
Swamp SparrowPasserellidae32022+20%1998
Magnolia WarblerParulidae32022-77%1994
American RedstartParulidae32022-53%1994
Ruby-crowned KingletRegulidae31998-25%1992
Purple FinchFringillidae31998+0%1993
Cliff SwallowHirundinidae31993n/an/a
Pine SiskinFringillidae31998n/an/a
Eastern KingbirdTyrannidae32018+200%2016
Great Crested FlycatcherTyrannidae22016-50%1994
Alder FlycatcherTyrannidae22022-42%1994
BobolinkIcteridae21994-33%1992
Song SparrowPasserellidae22022-17%1998
Barn SwallowHirundinidae22022-89%1994
Tree SwallowHirundinidae22022-70%1994
Black-and-white WarblerParulidae22022-91%1994
Nashville WarblerParulidae22022-89%1994
Yellow WarblerParulidae22022+20%2015
Black-throated Blue WarblerParulidae22022-33%1994
Pine WarblerParulidae22022-17%1994
Northern WaterthrushParulidae22021+0%1994

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