Tapajos Scythebill

The Tapajos scythebill (Campylorhamphus probatus) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is endemic to Brazil. == Taxonomy and systematics == The Tapajos scythebill was long considered conspecific with the curve-billed scythebill (C. procurvoides). By the early 2010s BirdLife International's Handbook of the Birds of the World (HBW) had separated it as this species. In July 2023 the International Ornithological Committee (IOC) adopted the split and in October 2023 the Clements taxonomy followed suit. The three systems assign it these two subspecies: C. p. probatus Zimmer, JT, 1934 — Madeira-Tapajos interfluve C. p. cardosoi Portes et al., 2013 — Tapajos-Xingu interfluve Subspecies C. p. cardosoi was initially described as a species in its own right. The South American Classification Committee of the American Ornithological Society retains these two taxa within the curve-billed scythebill. == Description == The Tapajos scythebill is 22.5 to 25 cm (8.9 to 9.8 in) long and weighs 31.5 to 38 g (1.1 to 1.3 oz). It is a slim, medium-sized woodcreeper with a very long, slim, dramatically decurved bill. The sexes have the same plumage. Adults of the nominate subspecies C. p. probatus have a light blackish head.…