BirdAnalyst
BBS Route · Maryland · BCR 30

Tall Timbers Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 111 species recorded across 45 survey years, no longer active.

111Species 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 →
45Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2014Span
7Observers

Bird Species Found on Maryland Tall Timbers

Top 40 of 111 species by most recent count. Each links to its species trend.

Species recorded on the Tall Timbers 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 GrackleIcteridae1452014+25%1969
European StarlingSturnidae882014+107%1969
Chipping SparrowPasserellidae542014+154%1969
Mourning DoveColumbidae512014-15%1969
American CrowCorvidae512014+16%1969
Northern CardinalCardinalidae482014-29%1969
Canada GooseAnatidae322014+320%1998
Northern MockingbirdMimidae282014-22%1969
Eastern BluebirdTurdidae27201413×1971
Blue JayCorvidae262014+117%1969
Blue GrosbeakCardinalidae242014+206%1969
Indigo BuntingCardinalidae242014-16%1969
House SparrowPasseridae232014-53%1969
Tufted TitmouseParidae232014+15%1969
Carolina ChickadeeParidae232014+87%1969
Black VultureCathartidae23201417×1976
American RobinTurdidae192014+12%1969
Brown-headed CowbirdIcteridae182014+250%1969
Carolina WrenTroglodytidae182014+97%1969
Red-winged BlackbirdIcteridae172014-43%1969
Red-eyed VireoVireonidae152014-63%1969
House FinchFringillidae142014+285%1987
Great Crested FlycatcherTyrannidae132014+50%1969
Blue-gray GnatcatcherPolioptilidae122014+42%1970
Purple MartinHirundinidae112014+207%1969
Cedar WaxwingBombycillidae112014+280%2001
Eastern Wood-PeweeTyrannidae102014-7%1969
Acadian FlycatcherTyrannidae102014+4%1969
Barn SwallowHirundinidae102014+329%1969
OspreyPandionidae102014+850%1971
Red-bellied WoodpeckerPicidae92014-62%1969
Orchard OrioleIcteridae92014+240%1969
Brown ThrasherMimidae92014+136%1969
Fish CrowCorvidae82014+19%1969
American GoldfinchFringillidae72014+29%1969
Summer TanagerCardinalidae72014+178%1975
Pine WarblerParulidae72014-5%1969
Turkey VultureCathartidae7201418×1971
Downy WoodpeckerPicidae62014+39%1969
Yellow-billed CuckooCuculidae52013-46%1969

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