From Opus

Photo by Marcel Gauthier
Trois-Pistoles, Quebec, Canada, August 2005

Vireo olivaceus

[edit] Identification

14-17 cm
Sparrow-sized. Olive green above, whitish below, with a narrow white eyebrow bordered above with black. Grey crown; red eye (eye dark in immature).

[edit] Similar Species

Warbling Vireo similar, but lacks gray crown and black border over bold white eyebrow. Similar to a number of species, including Black-whiskered Vireo, Cuban Vireo and others.

[edit] Distribution

Twelve different subspecies of this bird are distributed from Canada to Brazil and Argentina; only occurs in the Caribbean as a non-breeding migrant. Very common in summer in eastern woods of North America.

[edit] Taxonomy

Chivi Vireo (Vireo (o.) chivi, etc.) found in Tobago and South America is sometimes suspected of being a separate species.

[edit] Subspecies^[1]

• V. o. olivaceus:

• Canada, west-central and eastern US; winters to Cuba and ccentral [South America]]

• V. o. caucae:

• Tropical western Colombia

• V. o. griseobarbatus:

• Tropical western Ecuador and north-western Peru

• V. o. pectoralis:

• Northern Peru (middle Marañón Valley)

• V. o. solimoensis:

• Western Amazonian Brazil to eastern Ecuador and north-eastern Peru

• V. o. vividior:

• Colombia to Venezuela, the Guianas and northern Brazil; winters in Trinidad

• V. o. tobagensis:

• Tobago

• V. o. agilis:

• Coastal north-eastern Brazil (Pará to Rio de Janeiro)

Chivi Group: (migratory Chivi)

• V. o. diversus:

• South-eastern Brazil (São Paulo) to Uruguay, Paraguay and north-eastern Argentina

• V. o. chivi:

• Western Amazonian basin; winters north to Colombia and Venezuela

[edit] Habitat

Deciduous woods.

[edit] Behaviour

[edit] Diet

Forages slowly high in trees. Often heard but seldom seen.

[edit] Vocalisation

A series of hurried phrases. Not burry like most vireos.

[edit] References

1. Clements, JF. 2008. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2008. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist.

• List of references

[edit] External Links