VIREOS ... a selection of VIREO images.
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The vireos /ˈvɪri.oʊz/ make up a family, Vireonidae, of small to medium-sized passerine birds found in the New World (Canada to Argentina,including the West Indies) and Southeast Asia, "Vireo" is a Latin word referring to a green migratory bird, perhaps the female golden oriole, possibly the European greenfinch.
They are typically dull-plumaged and greenish in color, the smaller species resembling wood warblers apart from their heavier bills. They range in size from the Chocó vireo, dwarf vireo and lesser greenlet, all at around 10 centimeters and 8 grams, to the peppershrikes and shrike-vireos at up to 17 centimeters and 40 grams.