BirdAnalyst
BBS Route · Virginia · BCR 28

Dryden Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 75 species recorded across 11 survey years, still active.

75Species 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 →
11Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1991–2024Span
3Observers

Bird Species Found on Virginia Dryden

Top 40 of 75 species by most recent count. Each links to its species trend.

Species recorded on the Dryden 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
American CrowCorvidae542024-25%1993
Song SparrowPasserellidae482024-32%1993
Eastern TowheePasserellidae282024-38%1993
Northern CardinalCardinalidae272024-37%1993
Carolina WrenTroglodytidae272024+43%1993
Mourning DoveColumbidae252024-25%1993
Red-eyed VireoVireonidae182024-49%1993
Wood ThrushTurdidae182024+63%1993
Turkey VultureCathartidae172024+140%1993
Indigo BuntingCardinalidae142024-71%1993
American RobinTurdidae142024-53%1993
Field SparrowPasserellidae132024-53%1993
Northern Rough-winged SwallowHirundinidae132005+21%1994
Eastern BluebirdTurdidae112024+3%1993
Chimney SwiftApodidae102024+0%1993
Blue JayCorvidae102024-30%1993
American GoldfinchFringillidae102024-46%1993
Tufted TitmouseParidae92024-26%1993
Eastern PhoebeTyrannidae82024+114%1993
Red-bellied WoodpeckerPicidae72024+0%1993
Eastern Wood-PeweeTyrannidae72024-22%1993
Acadian FlycatcherTyrannidae72024+100%1993
Northern MockingbirdMimidae72024+63%1993
European StarlingSturnidae62024+56%1993
Barn SwallowHirundinidae62024-3%1993
Carolina ChickadeeParidae62024-77%1993
Hooded WarblerParulidae61998+127%1994
Chipping SparrowPasserellidae52024-39%1993
Scarlet TanagerCardinalidae52024-56%1994
Downy WoodpeckerPicidae42005-15%1994
Common GrackleIcteridae42024-63%1993
Cedar WaxwingBombycillidae42005+14%1993
Northern BobwhiteOdontophoridae31999-73%1993
Yellow-billed CuckooCuculidae31999+50%1993
Ruby-throated HummingbirdTrochilidae31999+33%1994
Red-winged BlackbirdIcteridae32024-64%1993
White-eyed VireoVireonidae32024-11%1993
Prairie WarblerParulidae31999-33%1993
OvenbirdParulidae32024-25%1993
Gray CatbirdMimidae32005-30%1993

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