The thick-billed vireo (''Vireo crassirostris'') is a small

songbird A songbird is a bird belonging to the suborder Passeri of the perching birds (Passeriformes). Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin ''oscen'', "songbird". The Passeriformes contains 500 ...

. It breeds in the

West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A ...

in the

Bahamas The Bahamas (), officially the Commonwealth of The Bahamas, is an island country within the Lucayan Archipelago of the West Indies in the Atlantic Ocean, North Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to ...

Turks and Caicos Islands The Turks and Caicos Islands (abbreviated TCI; and ) are a British Overseas Territory consisting of the larger Caicos Islands and smaller Turks Islands, two groups of tropical islands in the Lucayan Archipelago of the Atlantic Ocean and n ...

Cayman Islands The Cayman Islands () is a self-governing British Overseas Territory—the largest by population in the western Caribbean Sea. The territory comprises the three islands of Grand Cayman, Cayman Brac and Little Cayman, which are located to the ...

, Tortuga Island in

Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and ...

and on

cay A cay ( ), also spelled caye or key, is a small, low-elevation, sandy island on the surface of a coral reef. Cays occur in tropical environments throughout the Pacific, Atlantic, and Indian Oceans, including in the Caribbean and on the Great ...

s off the coast of

Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...

. It occasionally can be found as a vagrant to south

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. The

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

''V. c. approximans'' of

Providencia Island Isla de Providencia, historically Old Providence, and generally known as Providencia, is a mountainous Caribbean island that is part of the Colombian department of Archipelago of San Andrés, Providencia and Santa Catalina and the municipality o ...

is sometimes treated as a subspecies of the mangrove vireo (''V. pallens'') or as a separate species, the Providencia vireo.

Breeding

This

vireo The vireos make up a family, Vireonidae, of small to medium-sized passerine birds found in the New World (Canada to Argentina, including Bermuda and the West Indies) and Southeast Asia. "Vireo" is a Latin word referring to a green migratory bir ...

frequents bushes and shrubs in tropical thickets. The grass-lined nest is a neat cup shape, attached to a fork in a tree or bush branch. 2-3 dark-spotted white

egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the a ...

s are laid. Both the male and female incubate the eggs.

Description

The thick-billed vireo is approximately 14 cm in length. Its head and back are a greyish olive, and the underparts are buffy white. The wings and tail are dark, and there are two white wing bars on each wing. The eyes have dark

iris Iris most often refers to: *Iris (anatomy), part of the eye *Iris (mythology), a Greek goddess * ''Iris'' (plant), a genus of flowering plants *Iris (color), an ambiguous color term Iris or IRIS may also refer to: Arts and media Fictional enti ...

es. Sexes are similar. It shows a yellow partial spectacle just above the bill. There are five subspeciesaccording to the University of Michigan Zoology Dept.: Vireo crassirostris crassirostris Vireo crassirostris stalagmium Vireo crassirostris crassirostris Vireo crassirostris alleni Vireo crassirostris tortugae

Call

The thick-billed vireos song is a variable and rapid six to seven note phrase, starting and ending with a sharp ''chick'', very similar to the

white-eyed vireo The white-eyed vireo (''Vireo griseus'') is a small songbird of the family Vireonidae. Distribution and habitat It breeds in the eastern United States from New England west to northern Missouri and south to Texas and Florida, and also in easter ...

, but slightly harsher in sound.

Diet

The diet of this species consists almost exclusively of

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...

References

{{Taxonbar, from=Q2667730

thick-billed vireo The thick-billed vireo (''Vireo crassirostris'') is a small songbird. It breeds in the West Indies in the Bahamas, Turks and Caicos Islands, Cayman Islands, Tortuga (Haiti), Tortuga Island in Haiti and on cays off the coast of Cuba. It occasional ...

Endemic birds of the Caribbean Birds of the Bahamas Birds of the Cayman Islands Birds of Haiti Birds of the Turks and Caicos Islands

Taxa named by Henry Bryant (naturalist) University of MichiganMuseum of Zoology