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Species · Maryland · BBS 2025 Release · 1966–2024

Blue-headed Vireo Population Trend in Maryland

All statesForest birds

Blue-headed Vireo in Maryland has surged: up 17× on the route-weighted index since 1968.

17×Since 1968
11Routes In State
56Years

Notable Blue-headed Vireo Trends in Maryland

long arc increasecomputed index

Blue-headed Vireo has surged in Maryland: up 17× on the route-weighted index since 1968.

Blue-headed Vireo Population Forecast in Maryland

If the recent trend holds, Blue-headed Vireo in Maryland is projected to fall about 20% by 2029 — from 0.79 in 2024 to a central estimate of 0.63 (95% range 0.40–0.85). A 5-year backtest shows a typical error of ±37.2%, with 20% of held-out values landing inside the 95% band.

-20%Change by 2029
0.63Projected 2029 index
0.40–0.8595% range
±37.2%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
20250.580.360.81
20260.590.370.82
20270.600.380.83
20280.620.390.84
20290.630.400.85

Blue-headed Vireo Survey Routes in Maryland

Routes recording Blue-headed Vireo in Maryland.
Finzel1220241995
Jennings1020241995
Vindex320241966
Steyer320241996
Oldtown220241982
Accident220171993
Accident 2220242018
Floyd120241966
Mt Nebo119911969
Green Ridge120231995
Piney Grove120212014

Blue-headed Vireo Population Trend in Other States

alabamaconnecticutgeorgiakentuckymainemassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandsouth-carolinatennesseevermontvirginiawest-virginiawisconsin

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