BirdAnalyst
BBS Route · Massachusetts · BCR 30

E Dennis Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 105 species recorded across 49 survey years, still active.

105Species 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 →
49Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2021Span
6Observers

Bird Species Found on Massachusetts E Dennis

Top 40 of 105 species by most recent count. Each links to its species trend.

Species recorded on the E Dennis 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 CatbirdMimidae332021+21%1969
Song SparrowPasserellidae312021+1%1969
American RobinTurdidae262021-51%1969
Tufted TitmouseParidae232021+650%1975
American CrowCorvidae202021+35%1969
Blue JayCorvidae182021-63%1969
Northern CardinalCardinalidae182021+825%1972
Mourning DoveColumbidae172021+17%1969
Common GrackleIcteridae172021-46%1969
Baltimore OrioleIcteridae112021-74%1970
Wild TurkeyPhasianidae102019-15%2014
Black-capped ChickadeeParidae92021-48%1969
MallardAnatidae92018-7%1978
Red-winged BlackbirdIcteridae72021-82%1969
Red-bellied WoodpeckerPicidae72021+257%2001
Great Crested FlycatcherTyrannidae62021+300%1969
American GoldfinchFringillidae62021-8%1969
Yellow WarblerParulidae62021-55%1969
Northern House WrenTroglodytidae62021+157%1969
Herring GullLaridae52021-94%1969
Chimney SwiftApodidae52021-45%1969
Eastern TowheePasserellidae52021-84%1969
American Black DuckAnatidae52010-30%1970
Black-billed CuckooCuculidae52006+75%1971
Carolina WrenTroglodytidae52021+333%1979
Chipping SparrowPasserellidae42021-67%1969
House SparrowPasseridae42021-75%1969
Downy WoodpeckerPicidae42021+57%1973
Eastern PhoebeTyrannidae42021+60%1971
White-breasted NuthatchSittidae42021+400%1977
European StarlingSturnidae32021-92%1969
Cedar WaxwingBombycillidae32019+150%1971
OvenbirdParulidae32021-47%1969
Canada GooseAnatidae32021+83%1971
Brown-headed CowbirdIcteridae32021+27%1971
Eastern MeadowlarkIcteridae31977-20%1973
Black-crowned Night HeronArdeidae32021+40%1996
Bank SwallowHirundinidae32002-40%1977
Red-tailed HawkAccipitridae32019+167%2009
Common YellowthroatParulidae22021-87%1969

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