Vireo gilvus, commonly known as the Warbling Vireo, is native to North America. Its geographical distribution includes a wide range across the continent, primarily in the United States and Canada. The species breeds from British Columbia and the Yukon in Canada, eastwards to Newfoundland and southwards to the northern United States. During the winter months, it migrates to southern Mexico and Central America.

The Warbling Vireo typically inhabits deciduous and mixed woodlands. It is commonly found in areas with an abundance of tall trees, often near water sources such as rivers and streams. The species prefers regions with moderate climates, featuring warm summers and mild winters. During the breeding season, it is often found in open woodlands, riparian zones, and areas with scattered trees and shrubs.

In its ecological niche, the Warbling Vireo plays a role in insect control, feeding primarily on insects and spiders. It is a canopy-dwelling species that forages in the upper levels of trees, contributing to the ecosystem by maintaining insect populations and serving as prey for larger birds of prey. The species displays minor variations in habitat preference depending on regional availability of suitable environments and resources.