BirdAnalyst
BBS Route · Massachusetts · BCR 30

Littleton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 114 species recorded across 47 survey years, still active.

114Species 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 →
47Years 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
5Observers

Bird Species Found on Massachusetts Littleton

Top 40 of 114 species by most recent count. Each links to its species trend.

Species recorded on the Littleton 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-winged BlackbirdIcteridae422025-13%1969
American RobinTurdidae402025-52%1969
American CrowCorvidae262025-5%1969
Tufted TitmouseParidae252025+900%1976
Mourning DoveColumbidae242025+394%1969
Northern CardinalCardinalidae202025+857%1974
Blue JayCorvidae182025-82%1969
Gray CatbirdMimidae182025+0%1969
American GoldfinchFringillidae152025+131%1969
House SparrowPasseridae152025-40%1969
White-breasted NuthatchSittidae122025+233%1969
House FinchFringillidae122025-66%1990
Bank SwallowHirundinidae102004-42%1974
Red-bellied WoodpeckerPicidae102025+725%2005
Chipping SparrowPasserellidae92025-9%1969
Double-crested CormorantPhalacrocoracidae92000n/an/a
Eastern BluebirdTurdidae82024+114%2000
European StarlingSturnidae62025-98%1969
Song SparrowPasserellidae62025-64%1969
Barn SwallowHirundinidae62025-68%1969
Red-eyed VireoVireonidae62025+0%1969
Black-capped ChickadeeParidae62025-82%1969
Rock PigeonColumbidae52025-59%1970
Canada GooseAnatidae52024-31%1992
Eastern Wood-PeweeTyrannidae42024-40%1969
Cedar WaxwingBombycillidae42018-23%1971
OvenbirdParulidae42025-27%1969
Common YellowthroatParulidae42025-76%1969
Turkey VultureCathartidae42019+150%1990
Carolina WrenTroglodytidae42025+300%2000
Wild TurkeyPhasianidae42025+0%2012
Great Crested FlycatcherTyrannidae32025-46%1969
Eastern PhoebeTyrannidae32024-67%1969
Scarlet TanagerCardinalidae32023-67%1969
White-throated SparrowPasserellidae32006+25%1970
Common RavenCorvidae32025+50%2014
BobolinkIcteridae22015-85%1969
Vesper SparrowPasserellidae21993-50%1968
Eastern TowheePasserellidae22025-98%1969
Indigo BuntingCardinalidae22023+50%1969

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