Vireo bellii pusillus

Vireo bellii pusillus NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports — Vireo bellii pusillus ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Bell’s vireo (Vireo bellii)^[2] is a songbird that migrates between a breeding range in North America and a winter range in the Neotropics. It is dull olive-gray above and whitish below. It has a faint white eye ring and faint wing bars.

This bird was named by Audubon for John Graham Bell, who accompanied him on his trip up the Missouri River in the 1840s.

The least Bell’s vireo (Vireo bellii pusillus) is an endangered subspecies in Southern California. Consideration of Bell’s vireo has been a factor in several land development projects, to protect least Bell’s vireo habitat. The decline of the least Bell’s vireo is mostly due to a loss of riparian habitat.