Vireo olivaceus Linneaus, 1766.
OTHER COMMON NAMES
English: Noronha vireo, yellow-green vireo; French: Virйo aux yeux rouges; German: Rotaugenvireo; Spanish: Vireo de Ojos Rojos.
6 in (15 cm). Olive green upperparts; white breast and belly. Dark tips on wings, but no wing-bars. Dark red iris; a black line through the eye and a white one above. Head has a gray crown.
Breeds throughout much of the United States and Canada; winters in Central America and South America as far south as Argentina.
Deciduous-dominated forest and woodlands.
A migratory species that defends a breeding territory. The robinlike song is a series of loud, high-pitched, melodious, whistled phrases.
FEEDING ECOLOGY AND DIET
Eats small invertebrates. Usually forages on foliage, flowers, and limb surfaces, but will also capture flying insects; feeds on small fruits when invertebrates are not abundant.
Builds a small, cup-shaped nest that hangs from a fork in a tree branch. Lays two to four eggs, incubated by both parents for 11–14 days. Often raises two broods per season.
Not threatened, but its numbers are declining in some parts of its range.
SIGNIFICANCE TO HUMANS
Birdwatchers may look for this species.
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