The sooty-capped bush tanager or sooty-capped chlorospingus (''Chlorospingus pileatus'') is a small

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...

bird traditionally placed in the family

Thraupidae The tanagers (singular ) comprise the bird family Thraupidae, in the order Passeriformes. The family has a Neotropical distribution and is the second-largest family of birds. It represents about 4% of all avian species and 12% of the Neotrop ...

, but now viewed closer to

Arremonops ''Arremonops'' is a genus of Neotropical birds in the family Passerellidae. All species are found in Central America, Mexico, and/or northern South America. The olive sparrow reaches southern Texas. Species It contains the following sp ...

in the

Passerellidae New World sparrows are a group of mainly New World passerine birds, forming the family Passerellidae. They are seed-eating birds with conical bills, brown or gray in color, and many species have distinctive head patterns. Although they share t ...

. This bird is an endemic resident breeder in the highlands of Costa Rica and western

Panama Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...

. The sooty-capped bush tanager is found in mossy mountain forests, second growth and adjacent bushy clearings, typically from 1600 m altitude to above the timberline. The bulky cup nest is built on bank, in a dense bush, or hidden amongst epiphytes up to 11 m high in a tree. The normal clutch is two pink-brown eggs marked with white. The adult sooty-capped bush tanager is 13.5 cm long and weighs 20g. The adult has a blackish head with a white supercilium and a grey throat. It has olive upperparts and yellow underparts, becoming white on the belly. Some individuals in the Irazu-Turrialba area are greyer and lack yellow in the underparts. Immatures are browner-headed, duller below, and have a duller olive-tinged supercilium. This species is easily distinguished from common bush tanager by its blacker head and obvious supercilium. Sooty-capped bush tanagers occur in small groups, or as part of a

mixed-species feeding flock A mixed-species feeding flock, also termed a mixed-species foraging flock, mixed hunting party or informally bird wave, is a flock of usually insectivorous birds of different species that join each other and move together while foraging. These are ...

. This species feeds on

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 ...

spider Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species d ...

s and small

fruit In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in partic ...

s. The sooty-capped bush tanager's call is a high ', and the song is a scratchy ' with variations.

References

* Stiles and Skutch, ''A guide to the birds of Costa Rica'' * Garrigues and Dean, ''The Birds of Costa Rica - A Field Guide'' {{Taxonbar, from=Q1588168 sooty-capped bush tanager Birds of the Talamancan montane forests sooty-capped bush tanager sooty-capped bush tanager