General

Yellow-green Vireo: Medium-sized vireo with olive-green upperparts, pale yellow underparts, and bright yellow sides and flanks. Crown is dull gray, eyebrows are white, and eyestripe is dark. Eyes are red. Sexes are similar.

Range and Habitat

Yellow-green Vireo: Breeds from Rio Grande Valley of Texas southward. Spends winters in tropics. Preferred habitats include streamside thickets and woodlands.

Breeding and Nesting

Yellow-green Vireo: Two to four brown spotted, white eggs are laid in a nest made of grasses, plant fiber, lichens, moss, cobwebs, and strips of papery bark, and built from 5 to 40 feet above the ground. Incubation ranges from 13 to 14 days and is carried out by the female.

Foraging and Feeding

Yellow-green Vireo: Feeds on a wide variety of insects and spiders; also eats seeds and berries. Forages in the middle to upper levels of forests, sometimes joining mixed-species flocks; may hover briefly to take insects or fruits.

Vocalization

Yellow-green Vireo: Song varies from rich and clear to nasal and abrasive, a non-rhythmic, jerky "chiree-chree, swe, chiree-chree." Calls include dry chatter and coarse mewing "rrieeh."

Similar Species

Yellow-green Vireo: Red-eyed Vireo is paler below and has markings that are more distinct on head.