BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Sproul Sf-A Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 22 survey years, still active.

77Species 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-A

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Sproul Sf-A 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
OvenbirdParulidae642024+122%2004
Eastern TowheePasserellidae612024+38%2004
Red-eyed VireoVireonidae442024-6%2004
Common YellowthroatParulidae292024-41%2004
Chestnut-sided WarblerParulidae182024+36%2004
Mourning DoveColumbidae162024+286%2004
Canada GooseAnatidae152019-25%2006
American RobinTurdidae132024+240%2004
Black-throated Green WarblerParulidae112024-53%2004
Field SparrowPasserellidae92024+0%2004
Black-throated Blue WarblerParulidae92024-30%2004
Gray CatbirdMimidae92024+240%2005
Black-and-white WarblerParulidae82024-25%2004
VeeryTurdidae82024-10%2004
Eastern Wood-PeweeTyrannidae72024+43%2004
Blue-headed VireoVireonidae72024+44%2004
Scarlet TanagerCardinalidae62024-11%2004
Chipping SparrowPasserellidae52024-61%2004
Hermit ThrushTurdidae52024-56%2004
Wild TurkeyPhasianidae42023+40%2005
Indigo BuntingCardinalidae42024-52%2004
American RedstartParulidae42023-78%2004
Pileated WoodpeckerPicidae32024+100%2005
Least FlycatcherTyrannidae32024-65%2004
Blue JayCorvidae32024+260%2004
American GoldfinchFringillidae32024-38%2004
Magnolia WarblerParulidae32024+14%2004
Hairy WoodpeckerPicidae32024+25%2006
Yellow-billed CuckooCuculidae32023+38%2006
Pine WarblerParulidae32023+50%2007
American CrowCorvidae22024-18%2004
Rose-breasted GrosbeakCardinalidae22023-53%2004
Blackburnian WarblerParulidae22023-60%2004
Prairie WarblerParulidae22022+0%2006
Canada WarblerParulidae22024-10%2004
Black-capped ChickadeeParidae22024-26%2004
Eastern BluebirdTurdidae22024-38%2005
Red-breasted NuthatchSittidae22023+100%2010
Turkey VultureCathartidae12023+400%2005
Broad-winged HawkAccipitridae12024+0%2006

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