BirdAnalyst
BBS Route · Maryland · BCR 28

Jennings Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 29 survey years, still active.

124Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2025Span
3Observers

Bird Species Found on Maryland Jennings

Top 40 of 124 species by most recent count. Each links to its species trend.

Species recorded on the Jennings 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
Red-eyed VireoVireonidae1312025+24%1997
American RobinTurdidae1272025+59%1997
Gray CatbirdMimidae732025+179%1997
European StarlingSturnidae632025+215%1997
Red-winged BlackbirdIcteridae562025+50%1997
American CrowCorvidae552025-22%1997
Northern CardinalCardinalidae462025+169%1997
Common GrackleIcteridae432025+161%1997
Song SparrowPasserellidae432025-10%1997
Tufted TitmouseParidae412025+167%1997
Chipping SparrowPasserellidae402025+16%1997
Eastern TowheePasserellidae402025+36%1997
Indigo BuntingCardinalidae392025-25%1997
American GoldfinchFringillidae372025+197%1997
Common YellowthroatParulidae362025-19%1997
Black-capped ChickadeeParidae322025+63%1997
Barn SwallowHirundinidae312025+18%1997
Mourning DoveColumbidae302025+16%1997
Cedar WaxwingBombycillidae272025+36%1997
Northern House WrenTroglodytidae252025+176%1997
White-breasted NuthatchSittidae222025+79%1997
Scarlet TanagerCardinalidae212025-23%1997
House SparrowPasseridae212025-21%1997
OvenbirdParulidae192025-10%1997
Eastern Wood-PeweeTyrannidae162025+50%1997
Black-throated Green WarblerParulidae162025+250%1998
VeeryTurdidae162025-11%1997
Blue JayCorvidae152025+44%1997
Field SparrowPasserellidae142025-36%1997
Red-bellied WoodpeckerPicidae142025+671%1998
Eastern BluebirdTurdidae122025+167%1997
Wood ThrushTurdidae112025+17%1997
Blue-headed VireoVireonidae102025+329%1998
Cliff SwallowHirundinidae102025+380%1999
Turkey VultureCathartidae92025+114%1999
Brown-headed CowbirdIcteridae92025-21%1997
Black-throated Blue WarblerParulidae92025+58%1997
Yellow-bellied SapsuckerPicidae92025+300%2021
Downy WoodpeckerPicidae82025+92%1997
Chimney SwiftApodidae82025+123%1998

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