BirdAnalyst
BBS Route · Massachusetts · BCR 14

Chesterfield Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 128 species recorded across 54 survey years, still active.

128Species 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 →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2025Span
4Observers

Bird Species Found on Massachusetts Chesterfield

Top 40 of 128 species by most recent count. Each links to its species trend.

Species recorded on the Chesterfield 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 VireoVireonidae1022025+539%1969
Chipping SparrowPasserellidae542025+204%1969
OvenbirdParulidae502025+293%1969
Song SparrowPasserellidae482025+36%1969
Common YellowthroatParulidae422025+124%1969
American RobinTurdidae392025+51%1969
European StarlingSturnidae372025-52%1969
Mourning DoveColumbidae27202523×1970
American CrowCorvidae262025+67%1969
Tufted TitmouseParidae252025+783%1993
Yellow WarblerParulidae24202515×1969
Red-winged BlackbirdIcteridae212025-25%1969
Black-capped ChickadeeParidae212025+188%1969
Black-and-white WarblerParulidae182025+183%1969
BobolinkIcteridae172025+292%1969
Chestnut-sided WarblerParulidae172025+21%1969
Pine SiskinFringillidae171988-43%1973
American RedstartParulidae162025+69%1969
Eastern PhoebeTyrannidae152025+117%1969
American GoldfinchFringillidae142025+76%1969
Gray CatbirdMimidae142025+13%1969
VeeryTurdidae142025+12%1969
Northern CardinalCardinalidae122025+900%1973
Indigo BuntingCardinalidae112025+750%1971
Northern House WrenTroglodytidae102025+170%1969
Barn SwallowHirundinidae82025-51%1969
Blackburnian WarblerParulidae82025+367%1970
Yellow-bellied SapsuckerPicidae72025+97%1970
Tree SwallowHirundinidae72025+174%1970
Warbling VireoVireonidae72025+200%1984
Common RavenCorvidae72025+129%1995
Chimney SwiftApodidae62025-59%1969
Blue JayCorvidae62025+0%1969
Alder FlycatcherTyrannidae52025+300%1970
Black-throated Green WarblerParulidae52025+114%1970
Wood ThrushTurdidae52025-73%1969
Eastern Wood-PeweeTyrannidae42025+8%1971
Least FlycatcherTyrannidae42025-51%1969
Scarlet TanagerCardinalidae42025-21%1969
Cedar WaxwingBombycillidae42025+91%1969

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