BirdAnalyst
BBS Route · Connecticut · BCR 30

Danbury Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 37 survey years, still active.

124Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2023Span
7Observers

Bird Species Found on Connecticut Danbury

Top 40 of 124 species by most recent count. Each links to its species trend.

Species recorded on the Danbury 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
European StarlingSturnidae732023-62%1971
Mourning DoveColumbidae522023+46%1971
House SparrowPasseridae472023-45%1971
American RobinTurdidae432023-45%1971
Northern CardinalCardinalidae342023+104%1971
Song SparrowPasserellidae332023-16%1971
American CrowCorvidae322023+11%1971
Gray CatbirdMimidae322023-28%1971
House FinchFringillidae182023+457%1972
Carolina WrenTroglodytidae172023+225%2007
American GoldfinchFringillidae162023+41%1971
Chipping SparrowPasserellidae132023-72%1971
Northern House WrenTroglodytidae132023-59%1971
Blue JayCorvidae112023-49%1971
Common GrackleIcteridae112023-83%1971
Red-eyed VireoVireonidae112023-68%1971
Red-bellied WoodpeckerPicidae112023+333%2005
Black-capped ChickadeeParidae102023-62%1971
Canada GooseAnatidae102023-72%1976
Red-winged BlackbirdIcteridae92023-88%1971
Tufted TitmouseParidae92023+91%1971
White-breasted NuthatchSittidae82023+36%1971
Fish CrowCorvidae82023+217%2011
Wood ThrushTurdidae72023-87%1971
Double-crested CormorantPhalacrocoracidae72013+325%2011
Baltimore OrioleIcteridae62017-50%1971
Turkey VultureCathartidae62023+36%1981
KilldeerCharadriidae52017+100%1971
Eastern MeadowlarkIcteridae51986-39%1971
Scarlet TanagerCardinalidae52022-73%1971
Northern Rough-winged SwallowHirundinidae52017+200%1984
Downy WoodpeckerPicidae42023+12%1971
Chimney SwiftApodidae42023+27%1971
Eastern Wood-PeweeTyrannidae42023+100%1972
Common YellowthroatParulidae42023-88%1971
MallardAnatidae42022-40%1973
Brown-headed CowbirdIcteridae32023-67%1971
Indigo BuntingCardinalidae32017-40%1971
Barn SwallowHirundinidae32023-76%1971
BobolinkIcteridae31989+17%1972

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