BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Sardis Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 85 species recorded across 8 survey years, no longer active.

85Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–1974Span
2Observers

Bird Species Found on Pennsylvania Sardis

Top 40 of 85 species by most recent count. Each links to its species trend.

Species recorded on the Sardis 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 StarlingSturnidae1851974-11%1969
American RobinTurdidae1441974+100%1969
House SparrowPasseridae881974+5%1969
Common GrackleIcteridae801974+427%1969
Northern CardinalCardinalidae661974+248%1969
Chipping SparrowPasserellidae611974+139%1969
Song SparrowPasserellidae591974+124%1969
Red-winged BlackbirdIcteridae301974+69%1969
Mourning DoveColumbidae281974+261%1969
Northern House WrenTroglodytidae261974+22%1971
Gray CatbirdMimidae221974+50%1969
American CrowCorvidae191974+70%1969
Eastern TowheePasserellidae181974+191%1969
Yellow WarblerParulidae18197414×1969
Field SparrowPasserellidae161974+28%1969
Barn SwallowHirundinidae151974+95%1969
Brown-headed CowbirdIcteridae131974+211%1969
Ring-necked PheasantPhasianidae111974+567%1969
Red-eyed VireoVireonidae111974+525%1969
Tufted TitmouseParidae111974+292%1969
Wood ThrushTurdidae111974+300%1969
Rock PigeonColumbidae111974-66%1971
Carolina WrenTroglodytidae111974+120%1971
Chimney SwiftApodidae81974+52%1969
Baltimore OrioleIcteridae81974+78%1970
Common YellowthroatParulidae81974+264%1969
Indigo BuntingCardinalidae71974-33%1971
Cedar WaxwingBombycillidae71974+127%1971
Blue JayCorvidae61974+475%1969
KilldeerCharadriidae51974+200%1970
Acadian FlycatcherTyrannidae51974-14%1971
Blue-gray GnatcatcherPolioptilidae51974-41%1971
American GoldfinchFringillidae41974+13%1969
Yellow-billed CuckooCuculidae41973+67%1971
Eastern Wood-PeweeTyrannidae41974-57%1971
BobolinkIcteridae41970n/an/a
Eastern MeadowlarkIcteridae31973+20%1971
Rose-breasted GrosbeakCardinalidae31974+0%1972
Scarlet TanagerCardinalidae21974-14%1970
Brown ThrasherMimidae21974+267%1969

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