BirdAnalyst
BBS Route · New Jersey · BCR 29

Croton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 98 species recorded across 35 survey years, no longer active.

98Species 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 →
35Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2007Span
2Observers

Bird Species Found on New Jersey Croton

Top 40 of 98 species by most recent count. Each links to its species trend.

Species recorded on the Croton 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
American RobinTurdidae742007-21%1972
Canada GooseAnatidae632007+677%1979
Song SparrowPasserellidae532007-12%1972
Gray CatbirdMimidae452007+37%1972
Northern CardinalCardinalidae352007+233%1972
American GoldfinchFringillidae332007+119%1972
American CrowCorvidae322007-16%1972
Common GrackleIcteridae302007-74%1972
Chipping SparrowPasserellidae302007+10%1972
Red-winged BlackbirdIcteridae292007-68%1972
Rock PigeonColumbidae252002-84%1972
Common YellowthroatParulidae232007+66%1972
House SparrowPasseridae222007-55%1972
Brown-headed CowbirdIcteridae212007+19%1972
Mourning DoveColumbidae202007-54%1972
Tufted TitmouseParidae202007+820%1973
European StarlingSturnidae192007-77%1972
Indigo BuntingCardinalidae192007+20%1972
Wood ThrushTurdidae182007+15%1972
Field SparrowPasserellidae172007-10%1972
Wood DuckAnatidae151998+700%1993
Turkey VultureCathartidae142002+386%1974
Yellow WarblerParulidae132007+113%1972
Carolina WrenTroglodytidae132007+475%1987
Red-bellied WoodpeckerPicidae122007+450%1978
Chimney SwiftApodidae112007-2%1972
House FinchFringillidae112007+82%1980
Black-capped ChickadeeParidae102007+200%1976
Barn SwallowHirundinidae92003+9%1972
Northern MockingbirdMimidae92007+39%1972
Northern House WrenTroglodytidae92007-29%1972
Downy WoodpeckerPicidae62007+160%1972
Blue JayCorvidae62007-46%1972
Cedar WaxwingBombycillidae62007+138%1989
Grasshopper SparrowPasserellidae52007+50%1971
Great Blue HeronArdeidae42002+75%1987
Eastern KingbirdTyrannidae42007-35%1972
Red-eyed VireoVireonidae42007+167%1972
Black VultureCathartidae41999-43%1994
Eastern PhoebeTyrannidae32007+25%1972

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