BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Rasselas Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 131 species recorded across 29 survey years, still active.

131Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2022Span
6Observers

Bird Species Found on Pennsylvania Rasselas

Top 40 of 131 species by most recent count. Each links to its species trend.

Species recorded on the Rasselas 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 RobinTurdidae722022+68%1971
European StarlingSturnidae662022+240%1971
American CrowCorvidae612022+242%1971
OvenbirdParulidae50202214×1975
Red-eyed VireoVireonidae442022+24%1971
Chipping SparrowPasserellidae402022+184%1971
Red-winged BlackbirdIcteridae392022+1%1971
Mourning DoveColumbidae342022+692%1971
Black-capped ChickadeeParidae282022+77%1975
Common GrackleIcteridae272022+15%1971
Song SparrowPasserellidae252022+84%1971
American RedstartParulidae252022+980%1981
Cedar WaxwingBombycillidae242022+190%1975
Yellow-bellied SapsuckerPicidae23202212×1996
American GoldfinchFringillidae202022+317%1975
Northern CardinalCardinalidae20202212×1971
Common YellowthroatParulidae182022+413%1971
Barn SwallowHirundinidae162022+411%1971
Chimney SwiftApodidae152022+450%1971
Eastern TowheePasserellidae122022+20%1971
Turkey VultureCathartidae122022+39%2004
Rose-breasted GrosbeakCardinalidae112022+31%1971
Black-throated Green WarblerParulidae112022+313%1975
Hermit ThrushTurdidae112022+131%1971
Blue-headed VireoVireonidae112022+170%1989
Blue JayCorvidae102022+73%1971
Northern House WrenTroglodytidae102022+314%1971
Black-billed CuckooCuculidae102022+300%1994
Blackburnian WarblerParulidae92022+575%1975
Gray CatbirdMimidae82022+32%1971
House SparrowPasseridae72022-54%1971
Chestnut-sided WarblerParulidae72022+0%1976
Brown-headed CowbirdIcteridae62022+300%1971
Field SparrowPasserellidae62022+5%1971
Indigo BuntingCardinalidae62022-41%1976
Yellow WarblerParulidae52022+78%1971
Henslow's SparrowPasserellidae52004+150%1981
Downy WoodpeckerPicidae42022+14%1976
Savannah SparrowPasserellidae42022+23%1975
Tree SwallowHirundinidae42022+156%1989

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