BirdAnalyst
BBS Route · Maryland · BCR 30

Cokesbury Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 58 survey years, still active.

129Species 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 →
58Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2024Span
4Observers

Bird Species Found on Maryland Cokesbury

Top 40 of 129 species by most recent count. Each links to its species trend.

Species recorded on the Cokesbury 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 GrackleIcteridae1492024-31%1968
Red-winged BlackbirdIcteridae1032024+113%1968
Purple MartinHirundinidae102202416×1968
Carolina WrenTroglodytidae102202414×1968
European StarlingSturnidae962024+145%1968
Indigo BuntingCardinalidae932024+249%1968
Chipping SparrowPasserellidae862024+104%1968
Barn SwallowHirundinidae852024+226%1968
American CrowCorvidae732024+108%1968
Northern CardinalCardinalidae692024+98%1968
Mourning DoveColumbidae632024+188%1968
Laughing GullLaridae562024+996%1968
Turkey VultureCathartidae542024+869%1968
Tufted TitmouseParidae482024+123%1968
Blue GrosbeakCardinalidae452024+681%1968
Blue-gray GnatcatcherPolioptilidae44202427×1968
Pine WarblerParulidae432024+473%1968
Eastern BluebirdTurdidae43202415×1975
Common YellowthroatParulidae392024+47%1968
White-eyed VireoVireonidae372024+197%1968
Northern MockingbirdMimidae352024+38%1968
American RobinTurdidae352024-10%1968
Brown-headed CowbirdIcteridae342024+191%1968
Cedar WaxwingBombycillidae272024+880%1999
Red-bellied WoodpeckerPicidae262024+55%1968
Summer TanagerCardinalidae262024+442%1968
Carolina ChickadeeParidae262024+400%1968
Great Crested FlycatcherTyrannidae242024+132%1968
Canada GooseAnatidae242024+69%1989
Grasshopper SparrowPasserellidae232024+283%1968
Red-eyed VireoVireonidae232024+103%1968
OvenbirdParulidae212024+169%1968
Fish CrowCorvidae19202414×1971
Orchard OrioleIcteridae182024+367%1968
House SparrowPasseridae182024-86%1968
Bald EagleAccipitridae182024+617%1998
American GoldfinchFringillidae16202413×1969
Pileated WoodpeckerPicidae122024+233%1968
Chimney SwiftApodidae122024+14%1968
Downy WoodpeckerPicidae102024+214%1968

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