BirdAnalyst
BBS Route · New York · BCR 13

Philadelphia Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 35 survey years, still active.

129Species 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 →
1980–2025Span
3Observers

Bird Species Found on New York Philadelphia

Top 40 of 129 species by most recent count. Each links to its species trend.

Species recorded on the Philadelphia 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
Red-winged BlackbirdIcteridae942025-9%1983
European StarlingSturnidae462025+269%1983
Red-eyed VireoVireonidae402025+692%1983
Yellow WarblerParulidae382025+70%1983
Common YellowthroatParulidae302025+48%1983
American RobinTurdidae272025+23%1983
Gray CatbirdMimidae242025+160%1983
American CrowCorvidae212025+70%1983
American RedstartParulidae212025+500%1985
Mourning DoveColumbidae202025+160%1983
American GoldfinchFringillidae202025+79%1983
Song SparrowPasserellidae202025-22%1983
Cedar WaxwingBombycillidae202025+530%1983
Rock PigeonColumbidae182025+54%1983
Barn SwallowHirundinidae172025-48%1983
BobolinkIcteridae152025-8%1983
Eastern TowheePasserellidae132025+105%1983
Northern House WrenTroglodytidae132025+87%1983
Eastern PhoebeTyrannidae122025+282%1983
American BitternArdeidae122025+200%2004
Black-capped ChickadeeParidae112025+52%1983
Chestnut-sided WarblerParulidae112025+633%1987
Black-and-white WarblerParulidae102025+400%1983
House SparrowPasseridae102025-17%1983
Common GrackleIcteridae92025-61%1983
Savannah SparrowPasserellidae92025-31%1983
Warbling VireoVireonidae92025-41%1983
Yellow-throated VireoVireonidae92025+275%1987
Turkey VultureCathartidae92025-14%1989
Common RavenCorvidae92025+725%2004
Chipping SparrowPasserellidae82025+41%1983
Indigo BuntingCardinalidae82025+83%1983
Golden-winged WarblerParulidae82025+475%1993
Great Crested FlycatcherTyrannidae72025+150%1983
Swamp SparrowPasserellidae72025+117%1983
Northern CardinalCardinalidae72025+263%1995
Eastern KingbirdTyrannidae62025-37%1983
Blue JayCorvidae62025+222%1983
Willow FlycatcherTyrannidae62025+333%1991
Wilson's SnipeScolopacidae52023+125%1983

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.