Definition
Vireo olivaceous is the scientific name for the red-eyed vireo, a common and widespread songbird found in North American forests. These birds are characterized by their olive-green plumage, gray head, and distinctive red eyes. They are insectivores, feeding on insects and spiders in the forest canopy. They are migratory, spending the summer in North America and wintering in South America. Think of them as the long-distance singers of the bird world.