BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Roulette Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 122 species recorded across 34 survey years, no longer active.

122Species 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 →
34Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2021Span
6Observers

Bird Species Found on Pennsylvania Roulette

Top 40 of 122 species by most recent count. Each links to its species trend.

Species recorded on the Roulette 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 RobinTurdidae1042021+126%1972
European StarlingSturnidae602021-8%1972
OvenbirdParulidae512021+757%1972
Cedar WaxwingBombycillidae472021+929%1972
American CrowCorvidae372021+126%1972
Song SparrowPasserellidae372021-26%1972
Indigo BuntingCardinalidae342021+65%1972
Red-eyed VireoVireonidae342021+28%1972
Common YellowthroatParulidae342021+90%1972
Black-capped ChickadeeParidae332021+510%1973
Chestnut-sided WarblerParulidae282021+177%1972
Chipping SparrowPasserellidae242021+59%1972
Gray CatbirdMimidae232021+311%1973
Blue JayCorvidae222021+250%1972
Red-winged BlackbirdIcteridae212021-35%1972
Turkey VultureCathartidae212017+314%1994
Wood ThrushTurdidae192021-45%1972
VeeryTurdidae192021+920%1972
Mourning DoveColumbidae182021+586%1974
Eastern PhoebeTyrannidae172021+61%1972
Common GrackleIcteridae172021-27%1972
Black-throated Green WarblerParulidae172021+300%1981
Northern House WrenTroglodytidae152021+44%1972
Black-and-white WarblerParulidae152021+89%1980
Blue-headed VireoVireonidae122021+163%1980
Northern CardinalCardinalidae112021+77%1972
Barn SwallowHirundinidae112021-48%1972
American RedstartParulidae112021+486%1980
Hooded WarblerParulidae112021+89%1995
Rock PigeonColumbidae102016+275%1976
American GoldfinchFringillidae102021+77%1972
Scarlet TanagerCardinalidae102021-30%1972
Yellow WarblerParulidae102021+38%1972
Purple FinchFringillidae102021+333%1976
Tree SwallowHirundinidae92021+325%1974
Canada GooseAnatidae82021+817%1997
Field SparrowPasserellidae72021-24%1972
Eastern TowheePasserellidae72021-36%1972
Yellow-billed CuckooCuculidae72021+200%1989
Baltimore OrioleIcteridae62021+27%1972

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