BirdAnalyst
BBS Route · Maryland · BCR 30

Walnut Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 100 species recorded across 17 survey years, still active.

100Species Recorded
17Years Surveyed
1999–2024Span
5Observers

Bird Species Found on Maryland Walnut

Top 40 of 100 species by most recent count. Each links to its species trend.

Species recorded on the Walnut route.
History
European StarlingSturnidae2372024+41%2001
American CrowCorvidae582024-34%2001
American RobinTurdidae492024-27%2001
Carolina WrenTroglodytidae482024+210%2001
Common GrackleIcteridae442024-91%2001
Northern CardinalCardinalidae402024+21%2001
Eastern BluebirdTurdidae322024+750%2004
Chipping SparrowPasserellidae282024+13%2001
Mourning DoveColumbidae272024-39%2001
Northern MockingbirdMimidae262024-29%2001
Turkey VultureCathartidae25202411×2001
Blue GrosbeakCardinalidae232024+93%2001
Barn SwallowHirundinidae232024+35%2001
Tufted TitmouseParidae232024-14%2001
Red-eyed VireoVireonidae202024+264%2001
Red-winged BlackbirdIcteridae192024-25%2001
Indigo BuntingCardinalidae182024-4%2001
American GoldfinchFringillidae172024+67%2001
House SparrowPasseridae172024-86%2001
Laughing GullLaridae152024+55%2001
Eastern MeadowlarkIcteridae152024+100%2004
Carolina ChickadeeParidae152024+12%2001
House FinchFringillidae142024+8%2001
Chimney SwiftApodidae132024+7%2001
Fish CrowCorvidae132024+79%2001
Purple MartinHirundinidae132024+60%2001
Northern House WrenTroglodytidae132024+129%2001
Great Crested FlycatcherTyrannidae122024-17%2001
White-eyed VireoVireonidae122024-14%2005
Orchard OrioleIcteridae112024-10%2001
Pine WarblerParulidae112024+77%2001
Red-bellied WoodpeckerPicidae82024-7%2001
Blue JayCorvidae82024-10%2001
Yellow-billed CuckooCuculidae72024+217%2004
Black VultureCathartidae72024+167%2016
Ring-billed GullLaridae62005+20%1999
Downy WoodpeckerPicidae62024+18%2001
Eastern Wood-PeweeTyrannidae62024+75%2001
Field SparrowPasserellidae62024+50%2001
Eastern KingbirdTyrannidae62024+27%2004

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