Species: Vireo olivaceus

Red-eyed Vireo

Species

Show on Lists

Encyclopedia of Puget Sound

A 15-cm-long bird with a sturdy, slightly hooked bill, blue-gray crown, white eyebrow (bordered above and below with black), dark olive back, darker wings and tail, pale, unstreaked underparts, and a red eye (brown in fall juveniles); immatures and some fall adults are yellow on the flanks and undertail coverts; subspecies FLAVOVIRIDIS, which sometimes occurs in California and Texas, is yellower overall, with less distinct black lines on the head (NGS 1983).

Source: Encyclopedia of Life

Classification

Kingdom

Animalia

Phylum

Craniata

Class

Aves

Order

Passeriformes

Family

Vireonidae

Genus

Vireo

NatureServe

Source:
ELEMENT_GLOBAL.2.104140

Classification

Other Global Common Names

Juruviara-Oliva - Vireo Ojo Rojo, Chiví Común - viréo aux yeux rouges

Informal Taxonomy

Animals, Vertebrates - Birds - Perching Birds

Formal Taxonomy

Animalia - Craniata - Aves - Passeriformes - Vireonidae - Vireo - Species limits in this complex are uncertain; some authors separate V. FLAVOVIRIDIS and V. GRACILIROSTRIS as distinct species. The CHIVI group (Chivi Vireo) is closely related to the OLIVACEUS group and presumably conspecific with it (AOU 1998). V. FLAVOVIRIDIS was recognized as a distinct species by AOU (1987), based in part on genetic distinctness (Johnson and Zink 1985). May constitute a superspecies with V. GRACILIROSTRIS, V. FLAVOVIRIDIS, V. ALTILOQUUS, and V. MAGISTER (AOU 1998). See Banks and Browning (1995) for information on the use of the specific name OLIVACEUS over VIRESCENS. See Johnson et al. (1988) and Murray et al. (1994) for analyses of the phylogenetic relationships among vireos.

Ecology and Life History

Source: Encyclopedia of Life

Migration

false - false - true - Migrates northward through the eastern U.S. March-May (Terres 1980). North American breeders winter mostly in Amazon basin (Hilty and Brown 1986). Colombia inhabited by resident populations, as well as migrants from temperate and tropical areas to the north and south (Hilty and Brown 1986). North American breeders migrate through Costa Rica mainly late August-early November and early April-late May (Stiles and Skutch 1989). Breeders in southern South America move to Amazonia and southern Venezuela for austral winter (mainly April-August) (Ridgely and Gwynne 1989).

Non-migrant

false

Locally Migrant

false

Food Comments

In north, eats mostly insects, also eats small fruits and arillate seeds; forages in tree canopy, gleans insects from high deciduous foliage (Terres 1980, Bushman and Therres 1988). Notably frugivorous, almost totally so away from breeding areas (Hilty and Brown 1986, Ridgely and Gwynne 1989, Ridgely and Tudor 1989).

Reproduction Comments

Nests from mid-May to mid-August (peak late May to mid-July) in the mid-Atlantic region (see Bushman and Therres 1988). Clutch size 3-5 in north (usually 4). Occasionally 2 broods per year. Incubation 11-14 days, mostly or entirely by female. Young tended by both parents, leave nest at 10-14 days. One of commonest cowbird hosts.

Ecology Comments

45 territories averaged 0.7 ha per pair (Harrison 1979). In maple forests in Quebec, density averaged 1.2 pairs/ha (Darveau et al. 1992). In the Great Lakes region, populations were negatively affected by drought (Hagan and Johnston 1992).

Length

Weight

Conservation Status

NatureServe Global Status Rank

Global Status Last Reviewed

1996-12-03

Global Status Last Changed

1996-12-03

Other Status

LC - Least concern

Distribution

Conservation Status Map

Global Range

H - >2,500,000 square km (greater than 1,000,000 square miles) - H - BREEDS: British Columbia, probably southeastern Alaska, and Mackenzie to northern Saskatchewan and Newfoundland, south to northern Oregon, northern Idaho, eastern Colorado, Texas, Gulf Coast, and southern Florida; CHIVI group: South America from Colombia, Venezuela and adjacent islands, and Guianas south, west of Andes to western Ecuador and east of Andes to eastern Peru, Bolivia, and central Argentina, also on Fernando de Noronha off Brazil (AOU 1983, 1987). NORTHERN WINTER: South America (western Amazonia); eastern Colombia, southern Venezuela, eastern Ecuador, eastern Peru, and western Brazil; CHIVI group: northern part of breeding range south to Amazon basin (AOU 1983).

Global Range Code

Global Range Description

>2,500,000 square km (greater than 1,000,000 square miles)

ELEMENT_GLOBAL.2.104140