BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Portersville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 7 survey years, no longer active.

80Species 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 →
7Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–1988Span
2Observers

Bird Species Found on Pennsylvania Portersville

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Portersville 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
Red-winged BlackbirdIcteridae2501988+105%1975
American RobinTurdidae1541988+26%1975
House SparrowPasseridae1051988+40%1975
European StarlingSturnidae891988+46%1975
Chipping SparrowPasserellidae801988+84%1975
Common GrackleIcteridae681988+34%1975
Song SparrowPasserellidae651988+28%1975
Barn SwallowHirundinidae431988+131%1975
Chimney SwiftApodidae401988+46%1975
Mourning DoveColumbidae271988+180%1975
Gray CatbirdMimidae241988+8%1975
American CrowCorvidae221988+9%1975
Northern House WrenTroglodytidae221988+115%1975
Northern CardinalCardinalidae211988+15%1975
Blue JayCorvidae191988+100%1975
Red-eyed VireoVireonidae191988+114%1975
House FinchFringillidae171988n/an/a
Common YellowthroatParulidae161988+143%1975
Cedar WaxwingBombycillidae151988+46%1974
American GoldfinchFringillidae141988+186%1975
Indigo BuntingCardinalidae131988-26%1975
Wood ThrushTurdidae131988+62%1975
Savannah SparrowPasserellidae121988n/an/a
Eastern TowheePasserellidae111988+30%1975
Yellow WarblerParulidae101988+17%1975
Rock PigeonColumbidae91988+4%1976
Great Crested FlycatcherTyrannidae91988+800%1974
Tree SwallowHirundinidae91988+800%1976
Brown-headed CowbirdIcteridae81988+8%1974
Field SparrowPasserellidae81988-50%1975
Northern Rough-winged SwallowHirundinidae81988n/an/a
Canada GooseAnatidae71988-36%1978
KilldeerCharadriidae61988+81%1975
Eastern MeadowlarkIcteridae51988-30%1975
Rose-breasted GrosbeakCardinalidae51988+0%1975
Eastern Wood-PeweeTyrannidae41988-19%1975
White-breasted NuthatchSittidae41988+25%1975
Tufted TitmouseParidae41988-24%1975
Eastern BluebirdTurdidae41988+300%1977
Grasshopper SparrowPasserellidae31975+200%1973

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