BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Carsonville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 37 survey years, still active.

112Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2023Span
7Observers

Bird Species Found on Pennsylvania Carsonville

Top 40 of 112 species by most recent count. Each links to its species trend.

Species recorded on the Carsonville 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 GrackleIcteridae1202023-42%1974
European StarlingSturnidae832023-52%1974
American RobinTurdidae382023-51%1974
Mourning DoveColumbidae312023+81%1974
OvenbirdParulidae312023+133%1974
Red-eyed VireoVireonidae272023+348%1974
Rock PigeonColumbidae252023-68%1974
Indigo BuntingCardinalidae242023+22%1974
American CrowCorvidae232023-27%1974
Song SparrowPasserellidae212023+11%1974
Wood ThrushTurdidae202023+39%1974
Chipping SparrowPasserellidae182023-10%1974
Gray CatbirdMimidae182023+34%1974
House SparrowPasseridae152023-61%1974
Northern CardinalCardinalidae112023+214%1974
Eastern Wood-PeweeTyrannidae112023-39%1975
Carolina WrenTroglodytidae112023+188%1975
American GoldfinchFringillidae102023+115%1974
Cliff SwallowHirundinidae101996+200%1990
Chimney SwiftApodidae92023-35%1974
Red-winged BlackbirdIcteridae82023-88%1974
White-breasted NuthatchSittidae82023+320%1977
Scarlet TanagerCardinalidae82023-29%1975
Red-bellied WoodpeckerPicidae82023+467%1981
Field SparrowPasserellidae72023-70%1974
Tufted TitmouseParidae72023+11%1974
Brown-headed CowbirdIcteridae62023-74%1974
Barn SwallowHirundinidae62023-68%1974
Fish CrowCorvidae62023+250%2014
Baltimore OrioleIcteridae52022+5%1974
Common YellowthroatParulidae52023-12%1974
VeeryTurdidae52023+100%1975
Wild TurkeyPhasianidae52015+167%2001
Hooded WarblerParulidae52023+83%2001
Cerulean WarblerParulidae51997n/an/a
Blue JayCorvidae42023-33%1974
Northern Rough-winged SwallowHirundinidae42023+14%2001
Northern MockingbirdMimidae42022+120%1974
Pileated WoodpeckerPicidae42023+0%1988
House FinchFringillidae42023-47%1985

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