Campina Thrush

The campina thrush (Turdus arthuri) is a species of bird in the family Turdidae. It is found in Bolivia, Brazil, Colombia, Guyana, Suriname, and Venezuela. == Taxonomy and systematics == The campina thrush was originally described as Planesticus arthuri by Charles Chubb in 1914 from a specimen taken near the Abary River in British Guiana (modern day Guyana). Chub gave it the specific epithet arthuri to honor the son of F. V. McConnell: the senior McConnell had collected the type specimen. Following a 1931 publication it was reassigned as a subspecies of the black-billed thrush (T. ignobilis). Following molecular phylogenetics studies published in the 2010s, taxonomic systems recognized it again as a full species. The campina thrush is monotypic. == Description == The campina thrush is 21.5 to 24 cm (8.5 to 9.4 in) long and weighs 50 to 66 g (1.8 to 2.3 oz). The sexes have the same plumage. Adults have a mostly dark grayish brown head with a dusky-streaked white throat. Their upperparts, wings, and tail are dark grayish brown. Their underparts are mostly dull gray that becomes dirty white on the lower belly and undertail coverts. They have a dark iris, a dusky black bill, and…