BirdAnalyst
BBS Route · Delaware · BCR 30

Milton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 47 survey years, no longer active.

115Species 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 →
47Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2016Span
4Observers

Bird Species Found on Delaware Milton

Top 40 of 115 species by most recent count. Each links to its species trend.

Species recorded on the Milton 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
European StarlingSturnidae1542016+26%1968
Common GrackleIcteridae1242016+34%1968
American RobinTurdidae892016+347%1968
Turkey VultureCathartidae462016+780%1968
Canada GooseAnatidae322016-16%2000
Song SparrowPasserellidae312016+204%1968
Carolina WrenTroglodytidae31201611×1968
Mourning DoveColumbidae302016+137%1968
Chipping SparrowPasserellidae302016+58%1968
Laughing GullLaridae282016-29%1977
American GoldfinchFringillidae262016+178%1969
Purple MartinHirundinidae262016+833%1968
Barn SwallowHirundinidae262016+25%1968
Northern CardinalCardinalidae252016+31%1968
Northern MockingbirdMimidae252016+25%1968
American CrowCorvidae212016+7%1968
Indigo BuntingCardinalidae202016+74%1968
Red-winged BlackbirdIcteridae182016-30%1968
WilletScolopacidae181975+260%1971
Blue GrosbeakCardinalidae172016+100%1968
House FinchFringillidae172016+300%1989
House SparrowPasseridae162016-74%1968
Tufted TitmouseParidae162016-3%1968
Fish CrowCorvidae142016+160%1968
Chimney SwiftApodidae122016-40%1968
Black VultureCathartidae122015+280%1992
Red-bellied WoodpeckerPicidae112016+380%1968
Blue JayCorvidae112016+42%1968
Red-eyed VireoVireonidae112016-50%1968
Rock PigeonColumbidae82015-22%1968
Eastern Wood-PeweeTyrannidae82016+433%1969
Brown-headed CowbirdIcteridae82016+300%1969
Great Crested FlycatcherTyrannidae62016+120%1968
Common TernLaridae61975+200%1971
Common YellowthroatParulidae52016-52%1968
Carolina ChickadeeParidae52016+0%1968
Herring GullLaridae51977+400%1971
Tree SwallowHirundinidae52016+175%1995
Glossy IbisThreskiornithidae52004n/an/a
KilldeerCharadriidae42016-17%1968

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