BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Canadensis Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 128 species recorded across 42 survey years, still active.

128Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2024Span
5Observers

Bird Species Found on Pennsylvania Canadensis

Top 40 of 128 species by most recent count. Each links to its species trend.

Species recorded on the Canadensis 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 VireoVireonidae652024+690%1971
Tufted TitmouseParidae34202414×1971
American RobinTurdidae342024-65%1971
OvenbirdParulidae312024+173%1986
Gray CatbirdMimidae292024-3%1971
Canada GooseAnatidae272023+190%2006
Chipping SparrowPasserellidae242024-18%1971
Cedar WaxwingBombycillidae232024+143%1974
Northern House WrenTroglodytidae222024+58%1971
American CrowCorvidae202024+62%1971
American GoldfinchFringillidae192024+179%1971
VeeryTurdidae192024+54%1986
Eastern Wood-PeweeTyrannidae182024+783%1972
Northern CardinalCardinalidae152024+344%1971
Mourning DoveColumbidae142024+146%1971
American RedstartParulidae14202412×1971
White-breasted NuthatchSittidae142024+429%1971
Song SparrowPasserellidae132024+83%1971
Scarlet TanagerCardinalidae132024+250%1971
Black-capped ChickadeeParidae132024+300%1971
Carolina WrenTroglodytidae132024+475%1995
Double-crested CormorantPhalacrocoracidae132015n/an/a
Blue JayCorvidae122024+14%1971
House SparrowPasseridae122024-27%1971
Eastern PhoebeTyrannidae102024+44%1971
Blue-gray GnatcatcherPolioptilidae102024+83%1987
European StarlingSturnidae82024-78%1971
Downy WoodpeckerPicidae72024+300%1972
Great Crested FlycatcherTyrannidae72024+40%1971
Tree SwallowHirundinidae72024+144%1971
Yellow-throated VireoVireonidae72024+117%1987
Wood ThrushTurdidae62024-60%1971
Eastern BluebirdTurdidae62024+71%1978
Yellow-bellied SapsuckerPicidae62024-14%2014
Red-winged BlackbirdIcteridae52024-57%1971
Common YellowthroatParulidae52024+267%1973
Brown-headed CowbirdIcteridae42024-66%1971
Common GrackleIcteridae42024-86%1971
Barn SwallowHirundinidae42024-91%1971
American WoodcockScolopacidae41985+300%1970

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