BirdAnalyst
BBS Route · Maryland · BCR 29

Norwood Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 86 species recorded across 41 survey years, no longer active.

86Species 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 →
41Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2012Span
6Observers

Bird Species Found on Maryland Norwood

Top 40 of 86 species by most recent count. Each links to its species trend.

Species recorded on the Norwood 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 RobinTurdidae552012-3%1969
House SparrowPasseridae472012+6%1969
European StarlingSturnidae442012-58%1969
American CrowCorvidae392012+45%1969
Mourning DoveColumbidae322012-10%1969
Northern CardinalCardinalidae292012+126%1969
Carolina WrenTroglodytidae232012+600%1971
Gray CatbirdMimidae222012+106%1969
Chipping SparrowPasserellidae212012+17%1969
Song SparrowPasserellidae212012-2%1969
Northern MockingbirdMimidae192012-62%1969
American GoldfinchFringillidae172012+109%1969
Fish CrowCorvidae172012+318%1973
Common GrackleIcteridae142012-80%1969
House FinchFringillidae142012+194%1980
Chimney SwiftApodidae132012+46%1969
Carolina ChickadeeParidae132012+267%1969
Rock PigeonColumbidae122010-41%1969
Blue JayCorvidae112012-19%1969
Brown-headed CowbirdIcteridae112012-14%1969
Northern House WrenTroglodytidae102012+78%1969
Downy WoodpeckerPicidae92012+111%1969
Tufted TitmouseParidae92012+46%1969
Canada GooseAnatidae82012-80%1995
White-breasted NuthatchSittidae72012+260%1989
Red-bellied WoodpeckerPicidae52012+300%1970
Turkey VultureCathartidae42012+140%1982
Eastern Wood-PeweeTyrannidae32012-62%1970
Baltimore OrioleIcteridae32010+0%1973
Eastern TowheePasserellidae32012-72%1969
VeeryTurdidae31985+200%1972
Blue-gray GnatcatcherPolioptilidae32012+100%1980
Northern BobwhiteOdontophoridae21993-91%1969
Eastern KingbirdTyrannidae22012-31%1969
Great Crested FlycatcherTyrannidae22012+25%1969
Red-winged BlackbirdIcteridae22012-73%1969
Purple MartinHirundinidae21985-62%1969
Barn SwallowHirundinidae22011-73%1969
Red-eyed VireoVireonidae22012+80%1970
Wood ThrushTurdidae22012-74%1969

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