Western Warbling-Vireo (Vireo swainsonii)

Family
Vireonidae (Vireos)

Size
14 cm

First Described (Guide)
Baird,SF 1858

Habitat
Subtropical and tropical montane moist forest, temperate forest. From 1,100 - 3,000 m.

Range (Guide)

Alaska (B), Canada (B), Guatemala, Honduras, Mexico, Nicaragua, USA (B).

Population
Estimated population is unknown (2011).

Status NR
For more information see BirdLife International Species Factsheet.

Subspecies
Eastern Warbling-Vireo (Vireo gilvus) and Western Warbling-Vireo (Vireo swainsonii) (Sibley and Monroe 1990, 1993) have been lumped into Vireo gilvus following AOU (1998).

The following 4 subspecies are recognised:

swainsoni Baird,SF 1858 - Breeds from south-eastern Alaska and western Canada (southern from southern Yukon, south-western Mackenzie region and western Alberta) southern in western USA (east to northern Montana) to south-western California; migrates to western and southern Mexico, Guatemala, Honduras and western Nicaragua. Considered by some authors to be a subspecies of Eastern Warbling-Vireo (Vireo gilvus).
brewsteri (Ridgway, 1903) - Breeds Rocky Mts from south-western Montana and southern Idaho south through south-western Texas to western Mexico (south to south-central Oaxaca). Winters in Mexico. Considered by some authors to be a distinct species, Western Warbling-Vireo (Vireo swainsonii).
victoriae Sibley, 1940 - Breeds Cape region of Baja California (western Mexico). Wintering area unknown. Considered by some authors to be a distinct species, Western Warbling-Vireo (Vireo swainsonii).
sympatricus (A. R. Phillips, 1991) - Central Mexico (northern and east-central Puebla). Considered by some authors to be a distinct species, Western Warbling-Vireo (Vireo swainsonii).

References
See References.

Files:

JPG files for Western Warbling-Vireo (Vireo swainsonii) - 8 files

More Information

BirdLife International

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BirdLife International Species Factsheet.

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