BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Canadensis Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 128 species recorded across 43 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 →
43Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2025Span
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 VireoVireonidae922025+700%1971
Chipping SparrowPasserellidae552025+8%1971
American RobinTurdidae502025-58%1971
Gray CatbirdMimidae382025+3%1971
Blue JayCorvidae322025+83%1971
Common GrackleIcteridae302025-55%1971
Canada GooseAnatidae272023+190%2006
Black-capped ChickadeeParidae262025+430%1971
Mourning DoveColumbidae252025+175%1971
White-breasted NuthatchSittidae222025+571%1971
Northern CardinalCardinalidae212025+478%1971
Song SparrowPasserellidae202025+117%1971
Tufted TitmouseParidae20202515×1971
Northern House WrenTroglodytidae192025+64%1971
OvenbirdParulidae192025+143%1986
American GoldfinchFringillidae172025+236%1971
Wood ThrushTurdidae162025-56%1971
Eastern Wood-PeweeTyrannidae132025+800%1972
Yellow-bellied SapsuckerPicidae132025+71%2014
Double-crested CormorantPhalacrocoracidae132015n/an/a
Downy WoodpeckerPicidae122025+400%1972
VeeryTurdidae122025+40%1986
Red-winged BlackbirdIcteridae112025-58%1971
Scarlet TanagerCardinalidae102025+280%1971
American RedstartParulidae9202513×1971
American CrowCorvidae82025+38%1971
Yellow-throated VireoVireonidae72025+200%1987
Wild TurkeyPhasianidae72025+120%2006
Common YellowthroatParulidae62025+233%1973
Hairy WoodpeckerPicidae62025+267%1987
KilldeerCharadriidae62025+167%1994
Carolina WrenTroglodytidae62025+525%1995
Eastern PhoebeTyrannidae42025+28%1971
European StarlingSturnidae42025-80%1971
Tree SwallowHirundinidae42025+133%1971
House SparrowPasseridae42025-33%1971
American WoodcockScolopacidae41985+300%1970
Cedar WaxwingBombycillidae42025+119%1974
Eastern BluebirdTurdidae42025+86%1978
Least FlycatcherTyrannidae42025+29%1975

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