BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Sproul Sf-B Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 73 species recorded across 22 survey years, still active.

73Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2002–2024Span
1Observers

Bird Species Found on Pennsylvania Sproul Sf-B

Top 40 of 73 species by most recent count. Each links to its species trend.

Species recorded on the Sproul Sf-B 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
OvenbirdParulidae712024+154%2004
Red-eyed VireoVireonidae582024+9%2004
Eastern TowheePasserellidae502024+13%2004
Common YellowthroatParulidae302024-8%2004
Yellow-billed CuckooCuculidae182023+467%2005
Scarlet TanagerCardinalidae142024+24%2004
Chestnut-sided WarblerParulidae142024-28%2004
Black-throated Green WarblerParulidae132024-30%2004
Chipping SparrowPasserellidae122024+5%2004
Eastern Wood-PeweeTyrannidae102024+45%2004
Indigo BuntingCardinalidae92024-13%2004
Blue-headed VireoVireonidae92024+167%2004
Black-throated Blue WarblerParulidae82024+54%2004
American RobinTurdidae82024-28%2004
Blue JayCorvidae72024+114%2004
Black-capped ChickadeeParidae72024-4%2004
Field SparrowPasserellidae62024+50%2004
Hermit ThrushTurdidae62024-41%2004
Pileated WoodpeckerPicidae52023+200%2005
Black-billed CuckooCuculidae52023+125%2007
Least FlycatcherTyrannidae42024-48%2004
Brown-headed CowbirdIcteridae42023-13%2005
American RedstartParulidae42024-81%2004
Wood ThrushTurdidae42024-6%2004
Wild TurkeyPhasianidae42023+100%2009
Mourning DoveColumbidae32024+33%2005
Hooded WarblerParulidae32024+133%2013
American CrowCorvidae22024+25%2004
American GoldfinchFringillidae22024-40%2004
Black-and-white WarblerParulidae22024-26%2004
Worm-eating WarblerParulidae22022+33%2006
Cerulean WarblerParulidae22015-29%2005
Gray CatbirdMimidae22023+200%2007
Pine WarblerParulidae22022+0%2016
Chimney SwiftApodidae22024n/an/a
Broad-winged HawkAccipitridae12024+0%2006
Great Crested FlycatcherTyrannidae12023-43%2006
Common RavenCorvidae12024-55%2004
Purple FinchFringillidae12012+0%2004
Song SparrowPasserellidae12023-20%2015

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