BirdAnalyst
BBS Route · Pennsylvania · BCR 29

Collegeville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 99 species recorded across 52 survey years, still active.

99Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2024Span
2Observers

Bird Species Found on Pennsylvania Collegeville

Top 40 of 99 species by most recent count. Each links to its species trend.

Species recorded on the Collegeville 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 RobinTurdidae1712024+30%1973
Gray CatbirdMimidae862024+241%1973
Canada GooseAnatidae612024+131%1979
House SparrowPasseridae592024-21%1973
Red-winged BlackbirdIcteridae482024+13%1973
Northern CardinalCardinalidae482024+216%1973
Song SparrowPasserellidae472024+42%1973
European StarlingSturnidae422024-75%1973
Mourning DoveColumbidae412024-40%1973
Blue JayCorvidae402024+26%1973
Northern House WrenTroglodytidae312024+145%1973
Chipping SparrowPasserellidae272024+66%1973
Carolina WrenTroglodytidae23202417×1976
American CrowCorvidae202024-47%1973
Baltimore OrioleIcteridae162023+174%1973
Common GrackleIcteridae142024-81%1973
House FinchFringillidae142024+650%1978
Chimney SwiftApodidae102024-6%1973
American GoldfinchFringillidae102024+140%1973
Barn SwallowHirundinidae102024-54%1973
Cedar WaxwingBombycillidae102024-12%1985
Common YellowthroatParulidae82024-69%1973
Northern MockingbirdMimidae82024-68%1973
Tufted TitmouseParidae82024+169%1974
Red-bellied WoodpeckerPicidae7202430×1976
Great Crested FlycatcherTyrannidae72023+100%1973
White-breasted NuthatchSittidae72024+567%1991
Wood ThrushTurdidae62024-15%1973
Eastern BluebirdTurdidae62024+180%1999
Downy WoodpeckerPicidae52024+0%1973
Eastern TowheePasserellidae52023-58%1973
Red-tailed HawkAccipitridae52024+60%1987
Brown-headed CowbirdIcteridae42024+44%1973
KilldeerCharadriidae32022-36%1973
American KestrelFalconidae32005+67%1976
Eastern Wood-PeweeTyrannidae32023+225%1973
Hairy WoodpeckerPicidae32023+100%1984
Rock PigeonColumbidae22010-96%1973
Least FlycatcherTyrannidae21971n/an/a
Red-eyed VireoVireonidae22023+0%1973

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