BirdAnalyst
BBS Route · Maryland · BCR 29

Ijamsville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 110 species recorded across 38 survey years, still active.

110Species 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 →
38Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1986–2025Span
3Observers

Bird Species Found on Maryland Ijamsville

Top 40 of 110 species by most recent count. Each links to its species trend.

Species recorded on the Ijamsville 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 StarlingSturnidae2022025+90%1988
Northern CardinalCardinalidae1182025+267%1988
American RobinTurdidae902025+25%1988
Chipping SparrowPasserellidae802025+219%1988
House SparrowPasseridae692025+11%1988
Tufted TitmouseParidae622025+217%1988
Cedar WaxwingBombycillidae60202518×1988
Carolina WrenTroglodytidae572025+506%1988
Northern MockingbirdMimidae542025+23%1988
Mourning DoveColumbidae512025+46%1988
Red-winged BlackbirdIcteridae492025+11%1988
Indigo BuntingCardinalidae482025+12%1988
Chimney SwiftApodidae472025+104%1988
Song SparrowPasserellidae422025+75%1988
American CrowCorvidae412025+3%1988
American GoldfinchFringillidae412025+93%1988
House FinchFringillidae402025+66%1988
Gray CatbirdMimidae402025+126%1988
Brown-headed CowbirdIcteridae352025+158%1988
Canada GooseAnatidae312025+79%1993
Carolina ChickadeeParidae302025+254%1988
Eastern Wood-PeweeTyrannidae292025+58%1988
Red-eyed VireoVireonidae292025+123%1988
Eastern BluebirdTurdidae262025+386%1988
Turkey VultureCathartidae252025+292%1988
Red-bellied WoodpeckerPicidae252025+144%1988
Common GrackleIcteridae252025-74%1988
Blue JayCorvidae202025+87%1988
Barn SwallowHirundinidae202025-10%1988
Eastern KingbirdTyrannidae192025+417%1988
Blue-gray GnatcatcherPolioptilidae192025+513%1988
Great Crested FlycatcherTyrannidae182025+350%1988
Northern House WrenTroglodytidae182025+75%1988
Acadian FlycatcherTyrannidae162025+133%1988
Fish CrowCorvidae152025+380%1988
Wood ThrushTurdidae142025-51%1988
Downy WoodpeckerPicidae132025+171%1988
Scarlet TanagerCardinalidae92025+33%1988
Brown ThrasherMimidae92025+138%1988
White-breasted NuthatchSittidae92025+250%1991

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