Redeyed vireo

Vireo olivaceus

TAXONOMY

Vireo olivaceus Linneaus, 1766. OTHER COMMON NAMES

English: Noronha vireo, yellow-green vireo; French: Vireo aux yeux rouges; German: Rotaugenvireo; Spanish: Vireo de Ojos Rojos.

PHYSICAL CHARACTERISTICS

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.

DISTRIBUTION

Breeds throughout much of the United States and Canada; winters in Central America and South America as far south as Argentina.

HABITAT

Deciduous-dominated forest and woodlands. BEHAVIOR

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.

REPRODUCTIVE BIOLOGY

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.

CONSERVATION STATUS

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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