BirdAnalyst
BBS Route · South Carolina · BCR 27

Olar Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 92 species recorded across 22 survey years, still active.

92Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2019Span
2Observers

Bird Species Found on South Carolina Olar

Top 40 of 92 species by most recent count. Each links to its species trend.

Species recorded on the Olar 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
Northern CardinalCardinalidae542019+3%2000
Mourning DoveColumbidae472019+34%2000
American CrowCorvidae352019+3%2000
Wood StorkCiconiidae352011+400%2001
Red-bellied WoodpeckerPicidae182019-8%2000
Carolina WrenTroglodytidae182019-42%2000
Tufted TitmouseParidae172019+12%2000
Northern MockingbirdMimidae142019-19%2000
Blue JayCorvidae132019-23%2000
Barn SwallowHirundinidae122019+75%2000
White-eyed VireoVireonidae122019-13%2000
Red-eyed VireoVireonidae112019+77%2000
Eastern BluebirdTurdidae112019-43%2000
Western Cattle-EgretArdeidae102019-73%2000
Yellow-breasted ChatIcteriidae102019-59%2000
Black VultureCathartidae82019+90%2000
Painted BuntingCardinalidae82019-29%2001
Summer TanagerCardinalidae82019+44%2000
Yellow-billed CuckooCuculidae72019+58%2000
Eastern Wood-PeweeTyrannidae72019+82%2000
Indigo BuntingCardinalidae72019-68%2000
Blue-gray GnatcatcherPolioptilidae72019-39%2000
Northern BobwhiteOdontophoridae62019-60%2000
Chimney SwiftApodidae62019-52%2000
European StarlingSturnidae62003-73%1998
Pine WarblerParulidae62019-23%2000
Red-headed WoodpeckerPicidae62019+475%2001
House FinchFringillidae62013+500%2004
White IbisThreskiornithidae52017-57%2007
Red-shouldered HawkAccipitridae52019-30%2001
Bachman's SparrowPasserellidae52019+67%2000
Eastern TowheePasserellidae52019-76%2000
Turkey VultureCathartidae42018-45%2000
Eastern KingbirdTyrannidae42019-46%2000
Brown-headed CowbirdIcteridae42019-50%2000
Purple MartinHirundinidae42015-70%2000
Northern ParulaParulidae42019-54%2000
Brown ThrasherMimidae42019-55%2000
Rock PigeonColumbidae32018-38%2012
Fish CrowCorvidae32019-67%2000

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