BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Hop Bottom Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 126 species recorded across 53 survey years, still active.

126Species 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 →
53Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
5Observers

Bird Species Found on Pennsylvania Hop Bottom

Top 40 of 126 species by most recent count. Each links to its species trend.

Species recorded on the Hop Bottom 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
American RobinTurdidae602024-36%1969
Red-winged BlackbirdIcteridae432024-68%1969
Song SparrowPasserellidae332024-27%1969
Common YellowthroatParulidae252024+44%1969
Gray CatbirdMimidae252024+27%1969
Yellow WarblerParulidae232024+35%1969
American RedstartParulidae192024+450%1970
Mourning DoveColumbidae182024+209%1969
American CrowCorvidae172024-27%1969
Chipping SparrowPasserellidae172024-56%1969
OvenbirdParulidae162024+339%1969
European StarlingSturnidae152024-91%1969
Red-eyed VireoVireonidae142024+469%1969
House SparrowPasseridae142024-43%1969
Northern CardinalCardinalidae112024-35%1969
Carolina WrenTroglodytidae112024+360%1971
Black-capped ChickadeeParidae102024+62%1969
Chimney SwiftApodidae92024+17%1969
Eastern Wood-PeweeTyrannidae92024+89%1969
Barn SwallowHirundinidae92024-64%1969
Tree SwallowHirundinidae92024+120%1971
Northern House WrenTroglodytidae92024-40%1969
Tufted TitmouseParidae92024+200%1969
Eastern BluebirdTurdidae92024+300%1970
Eastern PhoebeTyrannidae82024-23%1969
Blue JayCorvidae82024-17%1969
Common GrackleIcteridae82024-78%1969
Bank SwallowHirundinidae82005+817%1970
House FinchFringillidae82024+33%1977
Red-bellied WoodpeckerPicidae82024+667%1997
Indigo BuntingCardinalidae72024-9%1969
Turkey VultureCathartidae72024+200%1986
American GoldfinchFringillidae62024-73%1969
Field SparrowPasserellidae62024-82%1969
Downy WoodpeckerPicidae52024-62%1969
Eastern TowheePasserellidae52024-52%1969
Baltimore OrioleIcteridae42024-74%1969
Scarlet TanagerCardinalidae42024-62%1969
Yellow-throated VireoVireonidae42024+100%1969
Rock PigeonColumbidae42024+200%1986

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