Red-eyed Vireo

Vireo olivaceus

Order

PASSERIFORMES

Family

Vireos (Vireonidae)

Code 4

REVI

Code 6

VIROLI

ITIS

Egg Color:

White with brown and black spots at large end



Number of Eggs:

3 - 5



Incubation Days:

11 - 14



Egg Incubator:

Female



Nest Location:

In tree.



Nest Material:

Bark pieces, grass, leaves, and plant fibers.



Migration:

Migratory



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General

Red-eyed Vireo: Medium-sized vireo with olive-brown upperparts and white underparts. Head has a gray cap, white eyebrow, black eyestripe, and red eyes. Sexes are similar. Juvenile has brown eyes and yellow-washed underparts.

Range and Habitat

Red-eyed Vireo: Breeds from the Northwest Territories east to Ontario and Gulf of Saint Lawrence and south through British Columbia to Oregon, along the California coastline, Colorado, the Gulf Coast, and Florida. Spends winters in the tropics. Inhabits mature deciduous woodlands; also found in shade trees in residential areas.

Breeding and Nesting

Red-eyed Vireo: Three to five white eggs with black and brown spots at larger end are laid in a cup nest made of bark, grass, spider webs, and other plant materials, and suspended in the fork of a horizontal branch 2 to 60 feet above the ground. Incubation ranges from 11 to 14 days and is carried out by the female.

Foraging and Feeding

Red-eyed Vireo: Consumes large quantities of insects, especially caterpillars of gypsy moths and fall webworms; also eats fruits in winter; gleans insects from tree foliage, sometimes hovering while foraging.

Vocalization

Red-eyed Vireo: Song is a series of repeated phrases and pauses, "look up...see me?...over here...this way...do you hear me?...higher still!" Call is a whining, nasal "chewy."

Similar Species

Red-eyed Vireo: Black-whiskered Vireo has distinct moustache stripe. Other similar vireos lack red eyes.

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UnderpartsX

Belly, undertail coverts, chest, flanks, and foreneck.

UpperpartsX
Back, rump, hindneck, wings, and crown.
CapX
The area on top of the head of the bird.
EyebrowX
Also called the supercilicum or superciliary it is the arch of feathers over each eye.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X