BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Eldred Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 117 species recorded across 21 survey years, still active.

117Species 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 →
21Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2022Span
4Observers

Bird Species Found on Pennsylvania Eldred

Top 40 of 117 species by most recent count. Each links to its species trend.

Species recorded on the Eldred 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 StarlingSturnidae1512022+67%1975
American RobinTurdidae602022+6%1975
Song SparrowPasserellidae452022+14%1975
Red-eyed VireoVireonidae442022+226%1975
OvenbirdParulidae442022+564%1981
Common YellowthroatParulidae372022+450%1975
Gray CatbirdMimidae342022+143%1975
American CrowCorvidae292022-5%1975
Mourning DoveColumbidae252022+425%1975
Cedar WaxwingBombycillidae252022+92%1975
Chestnut-sided WarblerParulidae252022+300%1987
Common GrackleIcteridae242022-43%1975
Red-winged BlackbirdIcteridae222022-50%1975
American GoldfinchFringillidae212022+108%1975
Blackburnian WarblerParulidae212022+150%1990
American RedstartParulidae202022+155%1987
Indigo BuntingCardinalidae192022+171%1981
Black-capped ChickadeeParidae172022+103%1975
Chipping SparrowPasserellidae162022-35%1975
Yellow WarblerParulidae152022-19%1975
Northern CardinalCardinalidae122022+70%1975
Cliff SwallowHirundinidae112022+118%2004
Blue JayCorvidae102022+55%1975
VeeryTurdidae102022-25%1975
House SparrowPasseridae92022-46%1975
Yellow-bellied SapsuckerPicidae92022+118%1988
Wood DuckAnatidae92010+800%1995
Downy WoodpeckerPicidae82022+56%1981
Eastern PhoebeTyrannidae82022+17%1975
Barn SwallowHirundinidae82022+77%1975
Northern House WrenTroglodytidae82022+0%1975
Blue-headed VireoVireonidae82022+157%1990
Swamp SparrowPasserellidae82022+113%2004
Common MerganserAnatidae82015-95%2004
BobolinkIcteridae72014+33%1988
Hooded WarblerParulidae72022+230%1988
House FinchFringillidae72013+9%1990
Chimney SwiftApodidae62005-46%1975
Brown-headed CowbirdIcteridae62022+7%1975
Magnolia WarblerParulidae62022+9%1981

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