BirdAnalyst
BBS Route · Maryland · BCR 30

Madison Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 135 species recorded across 58 survey years, still active.

135Species 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 →
58Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
5Observers

Bird Species Found on Maryland Madison

Top 40 of 135 species by most recent count. Each links to its species trend.

Species recorded on the Madison 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-winged BlackbirdIcteridae2712025-9%1968
European StarlingSturnidae802025+357%1968
Purple MartinHirundinidae732025+1%1968
Northern CardinalCardinalidae702025+37%1968
Brown-headed NuthatchSittidae562025+460%1968
Common YellowthroatParulidae542025+44%1968
Pine WarblerParulidae472025+200%1968
Mourning DoveColumbidae442025+237%1968
American CrowCorvidae442025+40%1968
Carolina ChickadeeParidae422025+154%1968
Tree SwallowHirundinidae402025+718%1968
Carolina WrenTroglodytidae33202512×1968
Northern House WrenTroglodytidae322025+96%1968
Great Crested FlycatcherTyrannidae282025+382%1968
Common GrackleIcteridae272025-61%1968
American GoldfinchFringillidae272025+583%1968
Indigo BuntingCardinalidae272025+42%1968
Tufted TitmouseParidae262025+189%1968
American Black DuckAnatidae232025+617%1968
Blue-gray GnatcatcherPolioptilidae222025+850%1972
Red-headed WoodpeckerPicidae212025+567%1989
Turkey VultureCathartidae192025+714%1969
Blue GrosbeakCardinalidae192025+291%1971
Chipping SparrowPasserellidae182025+19%1968
Downy WoodpeckerPicidae162025+260%1968
Brown-headed CowbirdIcteridae162025+387%1968
Barn SwallowHirundinidae162025-67%1968
Eastern KingbirdTyrannidae142025+25%1968
Eastern Wood-PeweeTyrannidae142025+144%1968
House SparrowPasseridae142025-76%1968
Seaside SparrowPasserellidae132025+43%1968
Northern MockingbirdMimidae132025+86%1968
Eastern BluebirdTurdidae132025+967%1984
Orchard OrioleIcteridae122025+113%1971
Great EgretArdeidae102025+50%1968
Summer TanagerCardinalidae102025+450%1974
Blue JayCorvidae82025+57%1968
Field SparrowPasserellidae82025-70%1968
OspreyPandionidae82025+222%1972
Cedar WaxwingBombycillidae82025+220%1987

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.