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Species · Maryland · BBS 2025 Release · 1966–2024

Kentucky Warbler Population Trend in Maryland

All statesForest birds

Kentucky Warbler in Maryland has fallen sharply: down 74% on the route-weighted index since 1968.

-74%Since 1968
74Routes In State
58Years

Notable Kentucky Warbler Trends in Maryland

long arc declinecomputed index

Kentucky Warbler has fallen sharply in Maryland: down 74% on the route-weighted index since 1968.

Kentucky Warbler Population Forecast in Maryland

If the recent trend holds, Kentucky Warbler in Maryland is projected to stay roughly flat through 2029, near 0.27 (95% range 0.00–0.85). A 5-year backtest shows a typical error of ±17.5%, with 100% of held-out values landing inside the 95% band.

-7%Change by 2029
0.27Projected 2029 index
0.00–0.8595% range
±17.5%Backtest error
19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.340.000.92
20260.320.000.90
20270.300.000.88
20280.280.000.87
20290.270.000.85

Kentucky Warbler Survey Routes in Maryland

Routes recording Kentucky Warbler in Maryland.
Pr Frederick620241991
Pt Republic519891966
Snow Hill419761966
Bald Friar419961992
Broomes Isl319911966
Easton320211966
Sinepuxent319781966
Oldtown220071973
Norwood219801980
Pleasant Val220051967
Pomonkey220211966
Melitota219961966
Harmony220171966
Vienna220241966
Mardela219821971
Newark220131966
Forest Grove220232011
Jessup220152015
Grove Neck219951994
Davidsnville220101982
Floyd120091970
Mt Nebo119911969
Vindex120171982
Potomac Park120231976
Williamsport120072007

Kentucky Warbler Population Trend in Other States

alabamaarkansasdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniasouth-carolinatennesseetexasvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.