BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Clearfield Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 50 survey years, still active.

112Species 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 →
50Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2025Span
2Observers

Bird Species Found on Pennsylvania Clearfield

Top 40 of 112 species by most recent count. Each links to its species trend.

Species recorded on the Clearfield 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
European StarlingSturnidae1372025-23%1971
American RobinTurdidae632025-50%1971
Mourning DoveColumbidae392025-53%1971
Common RavenCorvidae38202519×2012
American CrowCorvidae282025-31%1971
Common GrackleIcteridae262025-89%1971
Northern CardinalCardinalidae242025+167%1971
House FinchFringillidae202025-26%1982
Rock PigeonColumbidae162025-87%1971
Song SparrowPasserellidae162025-59%1971
Red-winged BlackbirdIcteridae152025-93%1971
House SparrowPasseridae152025-93%1971
Canada GooseAnatidae152025+44%1997
Gray CatbirdMimidae122025-5%1971
Northern House WrenTroglodytidae102025-64%1971
Cooper's HawkAccipitridae92022+233%2005
Northern MockingbirdMimidae82025-41%1971
Eastern BluebirdTurdidae82025+200%1992
Barn SwallowHirundinidae72025-71%1971
Red-bellied WoodpeckerPicidae72025+340%1985
Blue JayCorvidae62025-62%1971
Chimney SwiftApodidae52025-69%1971
Baltimore OrioleIcteridae52025-76%1971
Yellow WarblerParulidae52025+267%1972
Cliff SwallowHirundinidae51993+0%1971
Great Crested FlycatcherTyrannidae42025-30%1971
Chipping SparrowPasserellidae42025-86%1971
Tree SwallowHirundinidae42025+0%1983
Mute SwanAnatidae42016+33%2008
Black-billed CuckooCuculidae32002+50%1971
Downy WoodpeckerPicidae32025+13%1971
American GoldfinchFringillidae32025-71%1971
Savannah SparrowPasserellidae31973+200%1968
Common YellowthroatParulidae32025-29%1971
Swamp SparrowPasserellidae32002+150%1972
Wild TurkeyPhasianidae32025+20%2008
Herring GullLaridae31999n/an/a
MallardAnatidae22024-29%1971
KilldeerCharadriidae22023-71%1971
Northern BobwhiteOdontophoridae21994+100%1973

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