BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Doylesburg Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 87 species recorded across 12 survey years, still active.

87Species 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 →
12Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2009–2023Span
2Observers

Bird Species Found on Pennsylvania Doylesburg

Top 40 of 87 species by most recent count. Each links to its species trend.

Species recorded on the Doylesburg 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
Common GrackleIcteridae1332023-18%2011
American RobinTurdidae1272023-6%2011
European StarlingSturnidae1162023-8%2011
Red-winged BlackbirdIcteridae632023+41%2011
Rock PigeonColumbidae402023-40%2011
House SparrowPasseridae392023+47%2011
Mourning DoveColumbidae342023+56%2011
American CrowCorvidae332023-26%2011
Gray CatbirdMimidae312023+27%2011
Carolina WrenTroglodytidae272023+180%2011
Chimney SwiftApodidae252023+29%2011
Northern CardinalCardinalidae252023+52%2011
Barn SwallowHirundinidae252023+51%2011
Song SparrowPasserellidae232023+123%2011
Red-eyed VireoVireonidae232023+53%2011
Red-bellied WoodpeckerPicidae202023-5%2011
Chipping SparrowPasserellidae202023+13%2011
Tufted TitmouseParidae202023-37%2011
American GoldfinchFringillidae142023+191%2011
Blue JayCorvidae102023+17%2011
Turkey VultureCathartidae92023+5%2011
Indigo BuntingCardinalidae82023-13%2011
Northern MockingbirdMimidae82023-23%2011
Eastern BluebirdTurdidae82023-15%2011
KilldeerCharadriidae72023-31%2011
Eastern Wood-PeweeTyrannidae72019-35%2011
House FinchFringillidae72023+13%2011
Northern House WrenTroglodytidae72023-38%2011
Cedar WaxwingBombycillidae62023-43%2011
Canada GooseAnatidae52023-14%2011
Downy WoodpeckerPicidae52019+40%2011
Great Crested FlycatcherTyrannidae52023+14%2011
Fish CrowCorvidae52023+8%2011
Baltimore OrioleIcteridae52023+4%2011
Yellow WarblerParulidae52023-68%2011
Northern Rough-winged SwallowHirundinidae52023+100%2016
Purple MartinHirundinidae52018n/an/a
Red-tailed HawkAccipitridae42018+60%2013
Eastern PhoebeTyrannidae42023-29%2011
Brown-headed CowbirdIcteridae42023+29%2011

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