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The rock wren (''Salpinctes obsoletus'') is a small
Measurements:
* Length: 4.9-5.9 in (12.5-15 cm)
* Weight: 0.5-0.6 oz (15-18 g)
* Wingspan: 8.7-9.4 in (22-24 cm)
They have grey-brown upperparts with small black and white spots and pale grey underparts with a light brown rump. Additional distinctive features include a light grey line over the eye, a long slightly decurved thin bill, a long barred tail and dark legs. They actively hunt on the ground, around and under objects, probing with their bill as their extraction tool. They mainly eat
Rock Wren by John Audubon
Rock Wren - eNature.com
VIREO
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 5,00 ...
of the wren
Wrens are a family, Troglodytidae, of small brown passerine birds. The family includes 96 species and is divided into 19 genera. All species are restricted to the New World except for the Eurasian wren that is widely distributed in the Old Worl ...
family native to western North America, Mexico and Central America. It is the only species in the genus ''Salpinctes''.
Description
Measurements:
* Length: 4.9-5.9 in (12.5-15 cm)
* Weight: 0.5-0.6 oz (15-18 g)
* Wingspan: 8.7-9.4 in (22-24 cm)
They have grey-brown upperparts with small black and white spots and pale grey underparts with a light brown rump. Additional distinctive features include a light grey line over the eye, a long slightly decurved thin bill, a long barred tail and dark legs. They actively hunt on the ground, around and under objects, probing with their bill as their extraction tool. They mainly eat insect
Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...
s and spider
Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and ran ...
s. Its song is a trill that becomes more varied during the nesting season
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightwei ...
. These birds are permanent residents in the south of their range, but northern populations migrate
Migration, migratory, or migrate may refer to: Human migration
* Human migration, physical movement by humans from one region to another
** International migration, when peoples cross state boundaries and stay in the host state for some minimum le ...
to warmer areas from the central United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and southwest Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
southwards. They are occasional vagrants in the eastern United States. During the breeding season, they move to dry, rocky locations, including canyon
A canyon (; archaic British English spelling: ''cañon''), gorge or chasm, is a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales. Rivers have a natural tendency t ...
s, from southwestern Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
south to Costa Rica
Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the Pacific Ocean to the southwest, as well as Maritime bo ...
to build cup nest
A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian bl ...
s in a crevice or cavity, usually among rocks.
References
* Stiles and Skutch, ''A guide to the birds of Costa Rica''External links
Rock Wren by John Audubon
Rock Wren - eNature.com
VIREO
See also
* San Benedicto rock wren, a subspecies of ''Salpinctes'' that went extinct in 1952 {{Authority control rock wren Native birds of Western Canada Native birds of the Western United States Birds of Mexico Birds of Central America rock wren rock wren