BirdAnalyst
BBS Route · Delaware · BCR 30

Mt Pleasant Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 53 survey years, still active.

107Species 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 →
53Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2019Span
5Observers

Bird Species Found on Delaware Mt Pleasant

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Mt Pleasant 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
Glossy IbisThreskiornithidae76201613×1988
American RobinTurdidae712019+183%1968
Red-winged BlackbirdIcteridae502019-2%1968
Common GrackleIcteridae392019-79%1968
Northern CardinalCardinalidae382019+79%1968
European StarlingSturnidae352019-26%1968
Chipping SparrowPasserellidae272019+61%1968
American CrowCorvidae262019+5%1968
Canada GooseAnatidae252019+267%1970
Fish CrowCorvidae242019+486%1972
Herring GullLaridae221990+450%1988
Rock PigeonColumbidae182019-27%1968
Mourning DoveColumbidae172019+31%1968
Barn SwallowHirundinidae152019+48%1968
House SparrowPasseridae142019-84%1968
Northern MockingbirdMimidae122019-50%1968
Bank SwallowHirundinidae122015-42%1991
Carolina ChickadeeParidae112019+450%1969
Eastern Wood-PeweeTyrannidae102019+4%1968
Indigo BuntingCardinalidae102019-10%1968
Downy WoodpeckerPicidae102019+117%1970
MallardAnatidae102019+320%1974
Song SparrowPasserellidae92019+93%1968
Red-eyed VireoVireonidae92019-30%1968
Gray CatbirdMimidae92019+100%1968
Eastern BluebirdTurdidae92019+350%1974
Red-bellied WoodpeckerPicidae72019-25%1968
American GoldfinchFringillidae72019-10%1968
Grasshopper SparrowPasserellidae72019-16%1968
Wood ThrushTurdidae72019-20%1968
Carolina WrenTroglodytidae62019+386%1968
Horned LarkAlaudidae52019-4%1968
Great Blue HeronArdeidae52019+200%1971
House FinchFringillidae52019+600%1984
Chimney SwiftApodidae42019-76%1968
Great Crested FlycatcherTyrannidae42019-48%1968
Northern House WrenTroglodytidae42019+175%1971
Tufted TitmouseParidae42019-38%1968
Tree SwallowHirundinidae42019+867%1979
Cedar WaxwingBombycillidae42019-32%1983

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