BirdAnalyst
BBS Route · Pennsylvania · BCR 29

Jacobus Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 34 survey years, still active.

97Species 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 →
34Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1986–2025Span
3Observers

Bird Species Found on Pennsylvania Jacobus

Top 40 of 97 species by most recent count. Each links to its species trend.

Species recorded on the Jacobus 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 StarlingSturnidae1392025+60%1988
American RobinTurdidae802025+9%1988
Mourning DoveColumbidae512025-28%1988
Northern CardinalCardinalidae492025+86%1988
Gray CatbirdMimidae492025+51%1988
Common GrackleIcteridae402025-26%1988
American GoldfinchFringillidae332025+88%1988
Song SparrowPasserellidae312025+12%1988
House SparrowPasseridae302025-69%1988
House FinchFringillidae272025+42%1988
Blue JayCorvidae262025+27%1988
Chipping SparrowPasserellidae232025+49%1988
Northern MockingbirdMimidae222025-37%1988
Northern House WrenTroglodytidae212025-6%1988
Brown-headed CowbirdIcteridae182025+106%1988
Red-winged BlackbirdIcteridae182025-22%1988
Barn SwallowHirundinidae162025-23%1988
Carolina WrenTroglodytidae152025+79%1988
Chimney SwiftApodidae142025-33%1988
Indigo BuntingCardinalidae142025-25%1988
Cedar WaxwingBombycillidae142025+286%1992
Eastern BluebirdTurdidae142025+440%1989
Blue-winged WarblerParulidae14199714×1992
American CrowCorvidae122025-64%1988
Carolina ChickadeeParidae122025+125%1988
Canada GooseAnatidae122023-21%1993
Red-bellied WoodpeckerPicidae82025+78%1988
KilldeerCharadriidae72025-14%1988
Wood ThrushTurdidae72025-53%1988
Fish CrowCorvidae62025+167%1989
Field SparrowPasserellidae62025-42%1988
Red-eyed VireoVireonidae62025+33%1988
Tufted TitmouseParidae62025+23%1988
Eastern Wood-PeweeTyrannidae52025+189%1988
Brown ThrasherMimidae52025+60%1988
MallardAnatidae42017-46%1990
Rock PigeonColumbidae42025-95%1988
Eastern PhoebeTyrannidae42025+100%1989
White-breasted NuthatchSittidae42025+143%1994
Black VultureCathartidae42024+167%2018

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