BirdAnalyst
BBS Route · Maryland · BCR 30

Vienna Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 105 species recorded across 54 survey years, still active.

105Species 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 →
54Years 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
6Observers

Bird Species Found on Maryland Vienna

Top 40 of 105 species by most recent count. Each links to its species trend.

Species recorded on the Vienna 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
European StarlingSturnidae1152024+62%1968
Common GrackleIcteridae842024-50%1968
Mourning DoveColumbidae512024+32%1968
Turkey VultureCathartidae51202421×1968
American CrowCorvidae362024+79%1968
Carolina WrenTroglodytidae33202418×1969
American RobinTurdidae302024-12%1968
Indigo BuntingCardinalidae232024+45%1968
Northern MockingbirdMimidae222024-14%1968
Northern CardinalCardinalidae212024-34%1968
Purple MartinHirundinidae212024+166%1968
Blue GrosbeakCardinalidae182024+457%1968
Blue JayCorvidae142024-54%1968
Tufted TitmouseParidae142024+69%1968
Red-bellied WoodpeckerPicidae122024+17%1968
House SparrowPasseridae122024-79%1968
Horned LarkAlaudidae102024+59%1968
Chipping SparrowPasserellidae92024-67%1968
Cedar WaxwingBombycillidae92017-22%1997
Great Crested FlycatcherTyrannidae82024+350%1968
Red-winged BlackbirdIcteridae72024-71%1968
Eastern BluebirdTurdidae72024+70%1974
Orchard OrioleIcteridae62024+86%1971
Barn SwallowHirundinidae62024-49%1968
White-eyed VireoVireonidae52024+38%1968
American GoldfinchFringillidae42024-47%1968
Song SparrowPasserellidae42023-30%1968
Red-eyed VireoVireonidae42024-38%1968
Common YellowthroatParulidae42024-76%1968
American RedstartParulidae41980-25%1978
Black VultureCathartidae42024-22%1990
Fish CrowCorvidae42023+0%1989
Bald EagleAccipitridae42024+100%2006
Canada GooseAnatidae42024+44%2001
Belted KingfisherAlcedinidae32010+67%1973
Downy WoodpeckerPicidae32023-57%1968
Eastern PhoebeTyrannidae32024-44%1969
Acadian FlycatcherTyrannidae32024+33%1968
Wood ThrushTurdidae32024-80%1968
Laughing GullLaridae32006+100%2003

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