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Species · Maryland · BBS 2025 Release · 1966–2024

Hooded Warbler Population Trend in Maryland

All statesForest birds

Hooded Warbler in Maryland has surged: up 241% on the route-weighted index since 1968.

+241%Since 1968
54Routes In State
58Years

Notable Hooded Warbler Trends in Maryland

long arc increasecomputed index

Hooded Warbler has surged in Maryland: up 241% on the route-weighted index since 1968.

Hooded Warbler Population Forecast in Maryland

If the recent trend holds, Hooded Warbler in Maryland is projected to rise about 35% by 2029 — from 1.1 in 2024 to a central estimate of 1.5 (95% range 1.0–2.0). A 5-year backtest shows a typical error of ±29.3%, with 100% of held-out values landing inside the 95% band.

+35%Change by 2029
1.5Projected 2029 index
1.0–2.095% range
±29.3%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
20251.40.951.9
20261.50.972.0
20271.50.982.0
20281.51.02.0
20291.51.02.0

Hooded Warbler Survey Routes in Maryland

Routes recording Hooded Warbler in Maryland.
Oldtown1220241970
Finzel1020241995
Island Creek620241991
Pt Republic419891966
La Plata420091966
Hughesville420221966
Golden Hill419691969
Green Ridge420241995
Wolfsville320241966
Cheltenham320031969
Jennings320241995
Piney Grove320241996
Pr Frederick320231991
Vindex220181967
Smithsburg220141972
Berlin220111980
Pomonkey220241966
Pomfret220231967
Theodore220061969
Newark219981968
Floyd120221967
Mt Nebo119911976
Potomac Park119911973
Emmitsburg120212021
Olney120221974

Hooded Warbler Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamassachusettsmichiganmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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