Yellow-green Vireo (us-RGV)
From WikiBird
Contents |
Regional Information
Range, Abundance, and Seasonal Variations
Directions and Maps
General Information
Size
Length: 14-14.7cm (??in), Wingspan: ??cm (??in), Weight: 18.5g
Field Marks
Olive-green upperparts and a dusky-edged grey crown. A dark line from the bill to the red-brown eyes, and a white supercilium. Underparts are white with yellow breast sides and flanks. Juvenile: Duller with brown eyes, a brown tint to the back, and less yellow on the underparts.
Similar species
Some individuals are difficult to separate from the similar Red-eyed Vireo, with which it is sometimes considered conspecific, even in the hand. Adult Yellow-green Vireo differs from Red-eyed Vireo in its much yellower underparts, lack of a black border to the duller grey crown, yellower upperparts and different eye colour.
Sounds
A nasal nyaaah call and the song is a repetitive veree veer viree, fee’er vireo viree, shorter and faster than that of Red-eyed Vireo. This species rarely sings on its wintering grounds
Feeding & Behavior
Feeds on insects gleaned from tree foliage, favouring caterpillars and beetles. They also eat berries, including mistletoes.
Habitat & Nesting
This vireo occurs in the canopy and middle levels of light woodland, the edges of forest, and gardens at altitudes from sea level to 1500 m. The 6.5 cm wide cup nest is built by the female from a wide range of plant materials, and attached to a stout twig normally 1.5 - 3.5 m above the ground in a tree, but occasionally up to 12 m high. The normal clutch is two or three brown-marked white eggs laid from March to June and incubated by the female alone, although the male helps to feed the chicks.
Range
It breeds from southern Texas in the United States south to central Panama. It is migratory, wintering in the western Amazon basin. The breeding birds return to Central America from early February to March, and most depart southwards by mid-October
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