BirdAnalyst
BBS Route · New Jersey · BCR 30

Clarksville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 73 species recorded across 14 survey years, no longer active.

73Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–1991Span
3Observers

Bird Species Found on New Jersey Clarksville

Top 40 of 73 species by most recent count. Each links to its species trend.

Species recorded on the Clarksville 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
Common GrackleIcteridae5291991+262%1973
European StarlingSturnidae2961991+50%1973
American RobinTurdidae1301991+51%1973
Mourning DoveColumbidae1081991+170%1973
House SparrowPasseridae871991+30%1973
American CrowCorvidae551991+190%1973
Rock PigeonColumbidae531991+55%1973
Red-winged BlackbirdIcteridae411991+24%1973
Song SparrowPasserellidae371991+5%1973
Barn SwallowHirundinidae371991+27%1973
Laughing GullLaridae291991n/an/a
Turkey VultureCathartidae211991+100%1975
Northern CardinalCardinalidae191991+139%1973
American GoldfinchFringillidae181991+106%1974
Canada GooseAnatidae181982+200%1980
Common YellowthroatParulidae171991+7%1973
Blue JayCorvidae141991+12%1973
Northern MockingbirdMimidae141991-11%1973
House FinchFringillidae131991+137%1982
Gray CatbirdMimidae111991+95%1973
Herring GullLaridae91972n/an/a
Wood ThrushTurdidae81991-42%1973
Northern House WrenTroglodytidae71991+6%1973
Carolina ChickadeeParidae71991-8%1974
Northern BobwhiteOdontophoridae61991+41%1973
Downy WoodpeckerPicidae61991-9%1975
Red-tailed HawkAccipitridae61991+50%1979
MallardAnatidae61980+200%1976
Chimney SwiftApodidae41991-54%1973
Eastern KingbirdTyrannidae41991-9%1973
Baltimore OrioleIcteridae41991-30%1973
Chipping SparrowPasserellidae41991+8%1973
Yellow WarblerParulidae41991+157%1973
Eastern PhoebeTyrannidae31991+200%1969
Eastern TowheePasserellidae31991-69%1973
Yellow-billed CuckooCuculidae31984+80%1976
Bank SwallowHirundinidae31976n/an/a
BobolinkIcteridae31978n/an/a
American KestrelFalconidae21991-33%1973
Red-bellied WoodpeckerPicidae21991+125%1975

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