BirdAnalyst
BBS Route · Pennsylvania · BCR 29

Jacobus Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 33 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 →
33Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1986–2024Span
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 StarlingSturnidae2132024+68%1988
American RobinTurdidae882024+24%1988
Gray CatbirdMimidae622024+56%1988
Northern CardinalCardinalidae472024+79%1988
Song SparrowPasserellidae382024+19%1988
Mourning DoveColumbidae342024-26%1988
Common GrackleIcteridae302024-26%1988
House FinchFringillidae302024+78%1988
Chipping SparrowPasserellidae302024+53%1988
Brown-headed CowbirdIcteridae282024+147%1988
American GoldfinchFringillidae232024+46%1988
Carolina WrenTroglodytidae222024+100%1988
House SparrowPasseridae212024-71%1988
Barn SwallowHirundinidae202024-13%1988
Northern MockingbirdMimidae202024-36%1988
Blue JayCorvidae192024-2%1988
Red-winged BlackbirdIcteridae172024-22%1988
Northern House WrenTroglodytidae172024+4%1988
American CrowCorvidae142024-51%1988
Blue-winged WarblerParulidae14199714×1992
Carolina ChickadeeParidae132024+119%1988
Canada GooseAnatidae122023-21%1993
Indigo BuntingCardinalidae112024-19%1988
Tufted TitmouseParidae112024+23%1988
Turkey VultureCathartidae92024+100%1992
Eastern Wood-PeweeTyrannidae92024+233%1988
Red-bellied WoodpeckerPicidae82024+109%1988
Chimney SwiftApodidae82024-43%1988
Eastern BluebirdTurdidae82024+280%1989
Red-tailed HawkAccipitridae62024+120%1989
Cedar WaxwingBombycillidae62024+329%1992
White-breasted NuthatchSittidae62023+329%1994
Downy WoodpeckerPicidae52024+225%1988
Field SparrowPasserellidae52024-46%1988
Tree SwallowHirundinidae52024+80%1996
MallardAnatidae42017-46%1990
Yellow-billed CuckooCuculidae42022+167%1988
Black VultureCathartidae42024+167%2018
Rock PigeonColumbidae32024-97%1988
Eastern KingbirdTyrannidae32024+138%1988

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