BirdAnalyst
BBS Route · Massachusetts · BCR 30

Marion Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 117 species recorded across 43 survey years, still active.

117Species 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 →
43Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
6Observers

Bird Species Found on Massachusetts Marion

Top 40 of 117 species by most recent count. Each links to its species trend.

Species recorded on the Marion 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
Gray CatbirdMimidae842025+163%1969
American RobinTurdidae562025-41%1969
Northern CardinalCardinalidae53202519×1974
Chipping SparrowPasserellidae452025+33%1970
Cedar WaxwingBombycillidae432025+567%1971
Tufted TitmouseParidae402025+980%1973
Song SparrowPasserellidae362025+5%1969
Purple MartinHirundinidae302025+860%1988
Pine WarblerParulidae29202521×1972
Canada GooseAnatidae282025+133%1975
Red-winged BlackbirdIcteridae272025-40%1969
Yellow WarblerParulidae272025+460%1969
OvenbirdParulidae262025+200%1969
Mourning DoveColumbidae252025+243%1969
European StarlingSturnidae252025+17%1969
Carolina WrenTroglodytidae24202534×1980
Brown-headed CowbirdIcteridae202025+200%1969
American GoldfinchFringillidae202025+381%1970
American Black DuckAnatidae201981+164%1970
American RedstartParulidae192025+327%1974
Northern House WrenTroglodytidae182025+27%1969
American CrowCorvidae162025+51%1969
Common GrackleIcteridae162025-55%1969
House SparrowPasseridae162025-70%1970
Red-bellied WoodpeckerPicidae152025+280%2010
Chimney SwiftApodidae142025-10%1970
Great Crested FlycatcherTyrannidae132025+256%1971
White-breasted NuthatchSittidae102025+211%1972
Black-capped ChickadeeParidae102025+18%1969
Blue JayCorvidae92025-74%1969
Red-eyed VireoVireonidae92025-37%1972
Barn SwallowHirundinidae72025+35%1969
House FinchFringillidae72025+108%1980
Downy WoodpeckerPicidae62025+350%1969
Tree SwallowHirundinidae62025+30%1969
Northern BobwhiteOdontophoridae51996-81%1969
Eastern TowheePasserellidae52025-80%1970
Eastern KingbirdTyrannidae52025-15%1970
Great Blue HeronArdeidae52025+175%1997
MallardAnatidae52025-22%1972

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