BirdAnalyst
BBS Route · Maryland · BCR 30

Island Creek Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 99 species recorded across 32 survey years, still active.

99Species 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 →
32Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1991–2025Span
5Observers

Bird Species Found on Maryland Island Creek

Top 40 of 99 species by most recent count. Each links to its species trend.

Species recorded on the Island Creek 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 CardinalCardinalidae1322025+170%1993
Chipping SparrowPasserellidae1002025+208%1993
Red-eyed VireoVireonidae852025+17%1993
American CrowCorvidae702025+30%1993
Carolina WrenTroglodytidae622025+109%1993
Tufted TitmouseParidae622025+242%1993
Mourning DoveColumbidae522025+13%1993
Carolina ChickadeeParidae512025+115%1993
Acadian FlycatcherTyrannidae482025+202%1993
Chimney SwiftApodidae422025+223%1993
Brown-headed CowbirdIcteridae422025+132%1993
Eastern BluebirdTurdidae392025+321%1993
European StarlingSturnidae372025+101%1993
Blue-gray GnatcatcherPolioptilidae35202511×1993
American GoldfinchFringillidae322025+425%1993
Indigo BuntingCardinalidae312025+8%1993
Northern MockingbirdMimidae282025+6%1993
House FinchFringillidae272025+37%1993
Eastern Wood-PeweeTyrannidae262025+130%1993
Common GrackleIcteridae262025+6%1993
Wood ThrushTurdidae252025-48%1993
Northern ParulaParulidae222025+111%1993
Brown ThrasherMimidae202025+280%1993
Red-bellied WoodpeckerPicidae182025+51%1993
Red-winged BlackbirdIcteridae182025+192%1993
American RobinTurdidae162025-60%1993
Downy WoodpeckerPicidae152025+208%1993
Great Crested FlycatcherTyrannidae142025+375%1993
Pileated WoodpeckerPicidae132025+100%1994
Cedar WaxwingBombycillidae132025+246%1993
OvenbirdParulidae132025+13%1993
Yellow-throated WarblerParulidae132025+850%2011
House SparrowPasseridae112025-28%1993
Blue GrosbeakCardinalidae102025+93%1993
Scarlet TanagerCardinalidae92025-23%1993
Pine WarblerParulidae82025-29%1993
Barn SwallowHirundinidae72025-42%1994
Yellow-billed CuckooCuculidae62025+83%1993
Hooded WarblerParulidae62025+13%1993
MallardAnatidae62024+29%1994

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