Grey-crested Cacholote

The grey-crested cacholote (Pseudoseisura unirufa) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Bolivia, Brazil, and Paraguay. == Taxonomy and systematics == The grey-crested cacholote is monotypic. It was previously considered a subspecies of the Caatinga cacholote (P. cristata) which was then called the rufous cacholote. The two taxa were split following the data in a paper published in 2000. Confusingly, and contrary to the suggestion of the 2000 paper's authors, the South American Classification Committee of the American Ornithological Society, the Clements taxonomy, and some field guide authors call P. unirufa the rufous cacholote. == Description == The grey-crested cacholote is 20 to 21 cm (7.9 to 8.3 in) long and weighs 42 to 57 g (1.5 to 2.0 oz). It is a large, crested, furnariid. The sexes have the same plumage. Adults are mostly bright reddish-rufous that is somewhat paler on their underparts. Their crest varies from entirely rufous to almost entirely grayish. The center of their throat has an orange tinge. Their flight feathers have fuscous tips and the ends of the tail feathers lack barbs. Their iris is yellow to buff-yellow, their bill blue-gray to gray…