BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Sproul Sf-A Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 23 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 →
23Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2002–2025Span
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
OvenbirdParulidae612025+110%2004
Eastern TowheePasserellidae492025+31%2004
Red-eyed VireoVireonidae402025-18%2004
Common YellowthroatParulidae242025-45%2004
Canada GooseAnatidae152019-25%2006
Chestnut-sided WarblerParulidae132025+4%2004
Chipping SparrowPasserellidae102025-48%2004
Scarlet TanagerCardinalidae102025-25%2004
Black-throated Green WarblerParulidae102025-58%2004
American RobinTurdidae102025+240%2004
Field SparrowPasserellidae92024+0%2004
Mourning DoveColumbidae72025+329%2004
Gray CatbirdMimidae72025+300%2005
Canada WarblerParulidae62025+0%2004
VeeryTurdidae52025-14%2004
Wild TurkeyPhasianidae42023+40%2005
Least FlycatcherTyrannidae42025-58%2004
Blue-headed VireoVireonidae42025-4%2004
Black-throated Blue WarblerParulidae42025-43%2004
American RedstartParulidae42023-78%2004
Common RavenCorvidae32025-11%2004
American CrowCorvidae32025-18%2004
Hairy WoodpeckerPicidae32024+25%2006
Yellow-billed CuckooCuculidae32023+38%2006
Pine WarblerParulidae32023+50%2007
Pileated WoodpeckerPicidae22025+50%2005
Eastern Wood-PeweeTyrannidae22025-7%2004
Blue JayCorvidae22025+140%2004
Rose-breasted GrosbeakCardinalidae22025-58%2004
Indigo BuntingCardinalidae22025-70%2004
Black-and-white WarblerParulidae22025-46%2004
Magnolia WarblerParulidae22025+29%2004
Black-capped ChickadeeParidae22025-47%2004
Downy WoodpeckerPicidae22025+50%2019
Red-breasted NuthatchSittidae22023+100%2010
Turkey VultureCathartidae12023+400%2005
Broad-winged HawkAccipitridae12024+0%2006
Red-bellied WoodpeckerPicidae12017+0%2002
Eastern Whip-poor-willCaprimulgidae12024+0%2006
Great Crested FlycatcherTyrannidae12024-63%2004

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.