BirdAnalyst
Species · Arizona · BBS 2025 Release · 1966–2024

Warbling Vireo Population Trend in Arizona

All statesForest birds

Warbling Vireo in Arizona has surged: up 14× on the route-weighted index since 1974.

14×Since 1974
28Routes In State
52Years

Notable Warbling Vireo Trends in Arizona

long arc increasecomputed index

Warbling Vireo has surged in Arizona: up 14× on the route-weighted index since 1974.

Warbling Vireo Population Forecast in Arizona

If the recent trend holds, Warbling Vireo in Arizona is projected to rise about 43% by 2029 — from 2.8 in 2024 to a central estimate of 4.0 (95% range 2.2–5.8). A 5-year backtest shows a typical error of ±18.2%, with 100% of held-out values landing inside the 95% band.

+43%Change by 2029
4.0Projected 2029 index
2.2–5.895% range
±18.2%Backtest error
19682029
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
20253.82.05.6
20263.82.05.7
20273.92.15.7
20283.92.15.8
20294.02.25.8

Warbling Vireo Survey Routes in Arizona

Routes recording Warbling Vireo in Arizona.
Dry Park9320241992
Mt. Graham4020231995
Alpine2820231995
Tsaile1920231996
Prescott1120221976
Aztec Peak719781974
Sawmill520101996
Sprucedale520211992
Flagstaff420221988
Blue319911974
Skull Valley320241996
Portal220231979
Dragoon220091996
Patagonia220101997
Maine219971997
Carr Mtn220191985
Black Mesa119951995
Rucker120061995
Mormon Lake119741968
Pomerene120221976
San Simon119791979
Sunizona119741974
Tonto Vill.120152008
Forest Lakes120241994
Pinetop120222022

Warbling Vireo Population Trend in Other States

alabamaalaskaarkansascaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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