BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Susquehanna Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 117 species recorded across 41 survey years, still active.

117Species 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 →
41Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2025Span
5Observers

Bird Species Found on Pennsylvania Susquehanna

Top 40 of 117 species by most recent count. Each links to its species trend.

Species recorded on the Susquehanna 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-eyed VireoVireonidae362025+55%1973
American RobinTurdidae342025-30%1973
OvenbirdParulidae272025+400%1973
Song SparrowPasserellidae242025-43%1973
Red-winged BlackbirdIcteridae222025-68%1973
American CrowCorvidae202025+34%1973
BobolinkIcteridae182025+72%1973
Canada GooseAnatidae182025+408%1997
Common YellowthroatParulidae172025-20%1973
Yellow WarblerParulidae162025-5%1973
Gray CatbirdMimidae142025-18%1973
European StarlingSturnidae132025-74%1973
Chestnut-sided WarblerParulidae132025+100%1973
VeeryTurdidae132025-4%1973
American GoldfinchFringillidae122025+22%1973
Barn SwallowHirundinidae122025-48%1973
American RedstartParulidae112025-13%1973
Chipping SparrowPasserellidae102025-68%1973
Northern House WrenTroglodytidae102025-46%1973
Mourning DoveColumbidae9202512×1973
Wood ThrushTurdidae92025-84%1973
Baltimore OrioleIcteridae82025+31%1973
Northern CardinalCardinalidae82025+17%1973
Tree SwallowHirundinidae82025+63%1973
Black-and-white WarblerParulidae82025+67%1973
Black-capped ChickadeeParidae82025+400%1973
Rock PigeonColumbidae82025+400%1976
Tufted TitmouseParidae82025+440%1995
Common GrackleIcteridae72025-37%1973
Indigo BuntingCardinalidae62025+40%1973
Scarlet TanagerCardinalidae62025-29%1973
Chimney SwiftApodidae52021+114%1974
Blue JayCorvidae52025-3%1973
Field SparrowPasserellidae52025-68%1973
Cliff SwallowHirundinidae52024+220%1974
Cedar WaxwingBombycillidae52025-65%1973
Blue-headed VireoVireonidae52025+150%1979
Magnolia WarblerParulidae52025+33%2004
Eastern Wood-PeweeTyrannidae42025+83%1973
Least FlycatcherTyrannidae42025-63%1973

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