BirdAnalyst
BBS Route · Maryland · BCR 30

Millington Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 106 species recorded across 56 survey years, still active.

106Species 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 →
56Years 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
7Observers

Bird Species Found on Maryland Millington

Top 40 of 106 species by most recent count. Each links to its species trend.

Species recorded on the Millington 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
Northern CardinalCardinalidae682025+62%1968
Common GrackleIcteridae562025-51%1968
Rock PigeonColumbidae442025+179%1970
European StarlingSturnidae422025+64%1968
American RobinTurdidae412025+36%1968
Red-winged BlackbirdIcteridae402025-66%1968
Carolina WrenTroglodytidae34202529×1970
Chipping SparrowPasserellidae302025+47%1968
Mourning DoveColumbidae292025-28%1968
Indigo BuntingCardinalidae272025+127%1968
Turkey VultureCathartidae222025+691%1969
Red-bellied WoodpeckerPicidae212025+187%1968
House SparrowPasseridae212025-65%1968
Northern MockingbirdMimidae172025-18%1968
Acadian FlycatcherTyrannidae162025+900%1971
Blue GrosbeakCardinalidae152025+188%1968
Red-eyed VireoVireonidae152025+339%1968
Eastern Wood-PeweeTyrannidae142025+162%1968
Song SparrowPasserellidae142025+120%1968
Tufted TitmouseParidae142025+184%1968
Wood ThrushTurdidae142025-17%1968
Great Crested FlycatcherTyrannidae122025+229%1968
Common YellowthroatParulidae122025-11%1968
Blue JayCorvidae112025-35%1968
Barn SwallowHirundinidae112025-52%1968
American GoldfinchFringillidae92025-39%1968
Horned LarkAlaudidae92025+190%1969
Fish CrowCorvidae82025+183%1970
Purple MartinHirundinidae72025+150%1968
House FinchFringillidae72025+400%1985
Gray CatbirdMimidae62025-70%1968
Carolina ChickadeeParidae62025+119%1968
Eastern BluebirdTurdidae62025+200%1974
Black VultureCathartidae62025+367%1984
KilldeerCharadriidae52025+200%1972
Northern BobwhiteOdontophoridae52025-86%1968
Brown-headed CowbirdIcteridae52025+20%1968
Grasshopper SparrowPasserellidae52025+94%1968
Blue-gray GnatcatcherPolioptilidae52025+300%1971
OspreyPandionidae42025+600%1970

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