Yellow-green Vireo: Medium vireo, olive-green upperparts, pale yellow underparts, bright yellow sides and flanks. Crown is dull gray, eyebrows are white, and eyestripe is dark. Eyes are red. Bill is gray, legs, and feet are blue-gray. Flight is fast and direct on rapidly beating wings.
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.
The Yellow-green Vireo was first described in 1851 by John Cassin, an American ornithologist.
Some individuals are difficult to separate, even in the hand, from the similar Red-eyed Vireo, with which it is sometimes considered conspecific.
A group of vireos are collectively known as a "call" of vireos.
The Yellow-green Vireo has a very large range reaching up to around 1 million square kilometers. This bird can be found throughout North America and in many areas of Central America and the Carribean. There are also vagrant colonies in Barbados and Saint Lucia as well. This species appears in subtropical and tropical forests and shrublands as well as rural gardens and degraded or former forests. The global population of this bird is estimated to be around 500,000 to 5 million individual birds. Currently, it is not believed that the population trends for this species will soon approach the minimum levels that could suggest a potential decline in population. Due to this, population trends for the Yellow-green Vireo have a present evaluation level of Least Concern.