BirdAnalyst
BBS Route · Maryland · BCR 28

Jennings Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 123 species recorded across 28 survey years, still active.

123Species 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 →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2024Span
3Observers

Bird Species Found on Maryland Jennings

Top 40 of 123 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 VireoVireonidae1242024+11%1997
American RobinTurdidae1172024+57%1997
Red-winged BlackbirdIcteridae802024+69%1997
European StarlingSturnidae622024+231%1997
Common GrackleIcteridae532024+133%1997
Chipping SparrowPasserellidae522024+22%1997
American CrowCorvidae492024-21%1997
Gray CatbirdMimidae462024+147%1997
Tufted TitmouseParidae452024+124%1997
Barn SwallowHirundinidae422024+32%1997
Eastern TowheePasserellidae392024+31%1997
House SparrowPasseridae392024-33%1997
Song SparrowPasserellidae372024-13%1997
Cedar WaxwingBombycillidae372024+48%1997
American GoldfinchFringillidae362024+197%1997
OvenbirdParulidae362024-6%1997
Common YellowthroatParulidae322024-14%1997
Northern CardinalCardinalidae312024+143%1997
Black-capped ChickadeeParidae282024+41%1997
Indigo BuntingCardinalidae252024-44%1997
Northern House WrenTroglodytidae252024+132%1997
White-breasted NuthatchSittidae202024+38%1997
Yellow WarblerParulidae182024+23%1997
Red-bellied WoodpeckerPicidae182024+729%1998
Chestnut-sided WarblerParulidae172024+66%1997
Eastern Wood-PeweeTyrannidae162024+60%1997
Mourning DoveColumbidae152024+23%1997
American RedstartParulidae152024+291%1998
Eastern PhoebeTyrannidae132024+29%1997
Black-throated Green WarblerParulidae132024+267%1998
Carolina WrenTroglodytidae132024+400%1997
Scarlet TanagerCardinalidae122024-37%1997
Wood ThrushTurdidae122024+49%1997
Chimney SwiftApodidae112024+92%1998
Northern ParulaParulidae112024+200%1997
KilldeerCharadriidae102024+27%1997
Blue-headed VireoVireonidae102024+343%1998
VeeryTurdidae102024-43%1997
Blue JayCorvidae92024+85%1997
Eastern BluebirdTurdidae92024+100%1997

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