BirdAnalyst
BBS Route · Maryland · BCR 30

Cokesbury Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 59 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 →
59Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
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
Cedar WaxwingBombycillidae390202584×1999
European StarlingSturnidae2872025+167%1968
Common GrackleIcteridae2382025-16%1968
Red-winged BlackbirdIcteridae1272025+163%1968
Purple MartinHirundinidae90202520×1968
Northern CardinalCardinalidae792025+113%1968
Indigo BuntingCardinalidae762025+237%1968
American CrowCorvidae732025+109%1968
Chipping SparrowPasserellidae732025+100%1968
Tufted TitmouseParidae632025+138%1968
Barn SwallowHirundinidae602025+210%1968
Carolina WrenTroglodytidae60202514×1968
Blue GrosbeakCardinalidae552025+750%1968
Blue-gray GnatcatcherPolioptilidae48202526×1968
Mourning DoveColumbidae472025+233%1968
Laughing GullLaridae462025+793%1968
Common YellowthroatParulidae422025+58%1968
Canada GooseAnatidae412025+110%1989
Brown-headed CowbirdIcteridae392025+247%1968
Pine WarblerParulidae392025+418%1968
Great Crested FlycatcherTyrannidae342025+138%1968
Northern MockingbirdMimidae322025+22%1968
American RobinTurdidae312025+10%1968
White-eyed VireoVireonidae282025+207%1968
OvenbirdParulidae272025+173%1968
House SparrowPasseridae252025-80%1968
Red-bellied WoodpeckerPicidae242025+76%1968
Red-eyed VireoVireonidae232025+106%1968
Summer TanagerCardinalidae222025+467%1968
Carolina ChickadeeParidae222025+335%1968
Turkey VultureCathartidae192025+675%1968
Grasshopper SparrowPasserellidae192025+272%1968
Chimney SwiftApodidae172025+17%1968
Fish CrowCorvidae16202515×1971
Orchard OrioleIcteridae162025+292%1968
Pileated WoodpeckerPicidae152025+233%1968
Red-headed WoodpeckerPicidae142025+575%1984
Eastern BluebirdTurdidae13202512×1975
Worm-eating WarblerParulidae122025+733%1982
Eastern Wood-PeweeTyrannidae112025+480%1968

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.