BirdAnalyst
BBS Route · Pennsylvania · BCR 29

Mount Joy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 31 survey years, still active.

96Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1978–2025Span
6Observers

Bird Species Found on Pennsylvania Mount Joy

Top 40 of 96 species by most recent count. Each links to its species trend.

Species recorded on the Mount Joy 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
European StarlingSturnidae2512025-0%1988
House SparrowPasseridae1302025-15%1988
American RobinTurdidae942025+61%1988
Common GrackleIcteridae692025-70%1988
Mourning DoveColumbidae502025+21%1988
Song SparrowPasserellidae402025+9%1988
Northern CardinalCardinalidae372025+238%1988
Gray CatbirdMimidae332025+235%1988
Chipping SparrowPasserellidae302025+733%1988
Barn SwallowHirundinidae292025+121%1988
Rock PigeonColumbidae272025-52%1988
Northern Rough-winged SwallowHirundinidae27202511×1990
Blue JayCorvidae262025+284%1988
House FinchFringillidae262025-37%1990
Ring-billed GullLaridae231996-18%1991
American CrowCorvidae202025-73%1988
Red-winged BlackbirdIcteridae172025-40%1988
Brown-headed CowbirdIcteridae162025+600%1988
American GoldfinchFringillidae162025+700%1988
Indigo BuntingCardinalidae152025+28%1988
Red-bellied WoodpeckerPicidae132025+520%1988
Carolina WrenTroglodytidae122025+600%1988
Western Cattle-EgretArdeidae121990-69%1979
Fish CrowCorvidae112025+146%1988
Northern MockingbirdMimidae112025-39%1988
Cedar WaxwingBombycillidae102025+118%1991
Chimney SwiftApodidae92025-39%1988
MallardAnatidae82025-29%1989
Northern House WrenTroglodytidae82025-8%1988
Purple MartinHirundinidae72025+550%2015
Eastern BluebirdTurdidae72025+170%1993
Rose-breasted GrosbeakCardinalidae52006+400%1997
Wild TurkeyPhasianidae52021+400%2016
KilldeerCharadriidae42025+88%1988
Downy WoodpeckerPicidae42025+50%1988
Carolina ChickadeeParidae42025+167%1989
Eastern Wood-PeweeTyrannidae42025+300%1993
Wood ThrushTurdidae42025+143%1990
Warbling VireoVireonidae42025+100%1990
Canada GooseAnatidae42018+225%1994

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