BirdAnalyst
BBS Route · Pennsylvania · BCR 29

West Grove Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 18 survey years, no longer active.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 →
18Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–1996Span
8Observers

Bird Species Found on Pennsylvania West Grove

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

Species recorded on the West Grove 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 StarlingSturnidae2251996-33%1969
American RobinTurdidae1741996+8%1969
Common GrackleIcteridae1001996-63%1969
Red-winged BlackbirdIcteridae731996-26%1969
Mourning DoveColumbidae721996+45%1969
Song SparrowPasserellidae691996+155%1969
House FinchFringillidae611996+241%1986
Gray CatbirdMimidae601996+160%1969
American CrowCorvidae571996-2%1969
Chimney SwiftApodidae541996+2%1969
Canada GooseAnatidae451996-17%1973
Northern CardinalCardinalidae441996+296%1969
Yellow WarblerParulidae351996+430%1970
Rock PigeonColumbidae331996-78%1969
Barn SwallowHirundinidae321996-21%1969
Chipping SparrowPasserellidae311996+42%1969
Brown-headed CowbirdIcteridae281996+181%1969
Indigo BuntingCardinalidae271996+14%1969
American GoldfinchFringillidae251996+70%1969
House SparrowPasseridae241996-77%1969
Northern House WrenTroglodytidae241996+33%1969
Northern MockingbirdMimidae221996+17%1969
Cedar WaxwingBombycillidae211996+130%1988
Red-eyed VireoVireonidae201996+275%1969
Common YellowthroatParulidae181996+73%1969
Blue JayCorvidae171996+48%1969
Carolina ChickadeeParidae161996+420%1973
Red-bellied WoodpeckerPicidae141996+217%1970
Willow FlycatcherTyrannidae141996+240%1972
Baltimore OrioleIcteridae121996-24%1969
Wood ThrushTurdidae121996+17%1969
Warbling VireoVireonidae111996+217%1970
Tufted TitmouseParidae111996+417%1971
Eastern KingbirdTyrannidae81996-17%1970
BobolinkIcteridae81992+317%1975
Orchard OrioleIcteridae71996+180%1970
Eastern Wood-PeweeTyrannidae71996+129%1972
Fish CrowCorvidae71996+0%1977
Eastern TowheePasserellidae61996+57%1969
Purple MartinHirundinidae61978+520%1970

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