BirdAnalyst
BBS Route · Pennsylvania · BCR 29

Schwenksvill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 83 species recorded across 35 survey years, still active.

83Species 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 →
1988–2024Span
3Observers

Bird Species Found on Pennsylvania Schwenksvill

Top 40 of 83 species by most recent count. Each links to its species trend.

Species recorded on the Schwenksvill 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 RobinTurdidae1062024-32%1990
Northern CardinalCardinalidae382024+33%1990
Song SparrowPasserellidae352024-34%1990
Gray CatbirdMimidae332024+19%1990
European StarlingSturnidae302024-86%1990
Mourning DoveColumbidae282024-49%1990
American CrowCorvidae262024-57%1990
Blue JayCorvidae222024-19%1990
House FinchFringillidae222024-78%1990
House SparrowPasseridae202024-18%1990
Red-winged BlackbirdIcteridae192024-52%1990
Carolina WrenTroglodytidae172024+172%1990
Canada GooseAnatidae162024+22%1990
Northern House WrenTroglodytidae152024+42%1990
Chipping SparrowPasserellidae112024-49%1990
Rock PigeonColumbidae102022-79%1990
American GoldfinchFringillidae82024+32%1990
Tufted TitmouseParidae82024-30%1990
Northern MockingbirdMimidae62024-85%1990
Turkey VultureCathartidae62024+125%1994
Fish CrowCorvidae52023+40%1992
Red-bellied WoodpeckerPicidae42024-9%1990
Eastern BluebirdTurdidae42024+44%1992
Baltimore OrioleIcteridae32022-42%1990
Purple MartinHirundinidae32011+60%1996
American RedstartParulidae32001n/an/a
Great Crested FlycatcherTyrannidae22024+0%1990
Brown-headed CowbirdIcteridae22024-69%1990
White-eyed VireoVireonidae22022+25%1996
Blue-gray GnatcatcherPolioptilidae22002+200%2000
Worm-eating WarblerParulidae22002n/an/a
MallardAnatidae12024-61%1990
Ring-necked PheasantPhasianidae12017-88%1990
Red-tailed HawkAccipitridae12024-40%1991
Downy WoodpeckerPicidae12024-50%1990
Chimney SwiftApodidae12024-89%1990
Eastern KingbirdTyrannidae12021-67%1990
Eastern PhoebeTyrannidae12023-20%1990
Eastern Wood-PeweeTyrannidae12024-44%1990
Willow FlycatcherTyrannidae12012-20%1990

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