BirdAnalyst
BBS Route · Maryland · BCR 28

Accident Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 105 species recorded across 26 survey years, no longer active.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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1992–2017Span
2Observers

Bird Species Found on Maryland Accident

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

Species recorded on the Accident 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
Red-eyed VireoVireonidae492017-17%1994
American RobinTurdidae452017+28%1994
American CrowCorvidae412017+17%1994
Song SparrowPasserellidae222017-5%1994
Common YellowthroatParulidae202017-17%1994
Indigo BuntingCardinalidae182017-45%1994
Barn SwallowHirundinidae172017-7%1994
Chipping SparrowPasserellidae162017-53%1994
Red-winged BlackbirdIcteridae152017-38%1994
Mourning DoveColumbidae132017+6%1994
European StarlingSturnidae102017-63%1994
Tufted TitmouseParidae102017+33%1994
Eastern TowheePasserellidae92017-22%1994
Black-capped ChickadeeParidae92017-14%1994
Common GrackleIcteridae82017-69%1994
American GoldfinchFringillidae82017+17%1994
Scarlet TanagerCardinalidae82017-53%1994
Chestnut-sided WarblerParulidae82017+89%1994
OvenbirdParulidae82017+62%1994
Chimney SwiftApodidae72017-9%1994
Rock PigeonColumbidae62016+55%1994
Gray CatbirdMimidae62017-38%1994
Carolina WrenTroglodytidae62017+167%1997
Northern House WrenTroglodytidae62017-59%1994
White-breasted NuthatchSittidae62017+33%1994
Red-bellied WoodpeckerPicidae52017+50%1994
Blue JayCorvidae52017-52%1994
BobolinkIcteridae52017-5%1994
Field SparrowPasserellidae52017-58%1994
Wood ThrushTurdidae52017-77%1994
KilldeerCharadriidae42017-27%1994
House FinchFringillidae42017-33%1994
Northern CardinalCardinalidae42017-48%1994
Tree SwallowHirundinidae42015+50%1994
House SparrowPasseridae42017+6%1994
Canada GooseAnatidae42016-63%2003
Downy WoodpeckerPicidae32017-40%1994
Pileated WoodpeckerPicidae32017-17%1995
Eastern Wood-PeweeTyrannidae32017-60%1994
Savannah SparrowPasserellidae32017-42%1995

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