Adults are mainly olive on the head and upperparts with a yellow throat and white belly; they have dark eyes with yellow "spectacles". The tail and wings are dark with white wing bars. They have thick blue-grey legs and a stout bill.
These birds migrate to the deep southern United States, Mexico, and Central America. They are very rare vagrants to western Europe. There is one record from Britain in Kenidjack Valley Cornwall September 20–27, 1990. There is also a sight report from Germany.
They forage for insects high in trees. They also eat berries, especially before migration and in winter when they are occasionally seen feeding on gumbo-limbo (Bursera simaruba) fruit. They make a thick cup nest attached to a fork in a tree branch.
- BirdLife International (2012). "Vireo flavifrons". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Foster, Mercedes S. (2007) The potential of fruiting trees to enhance converted habitats for migrating birds in southern Mexico. Bird Conservation International 17(1): 45-61. doi:10.1017/S0959270906000554 PDF fulltext