described it as Corvus gymnocephalus, placing it in the crow genus Corvus. The species name is derived from the Ancient Greek words gymnos "naked", and kephalē "head". However, only three years later the bird was removed from the genus Corvus by René Primevère Lesson and placed in its own genus, Picathartes, as it did not share characteristics common to members of Corvus such as a feathered head. This generic name comes from a combination of the Latin genera pica for "magpie" and cathartes for "vulture". Since its initial description, the picathartes have been placed in more than five different families, including those of crows (Corvidae), starlings (Sturnidae), Old World flycatchers (Muscicapidae), babblers (Timaliidae) and Old World warblers (Sylviidae). Today the white-necked rockfowl and its close relative the grey-necked rockfowl are believed to comprise a unique family, Picathartidae. It has also been suggested though not generally accepted that the two rockfowl represent the remnants of an ancient bird order. Recent DNA analysis has shown that Picathartidae and its closest relatives, southern Africa's rockjumpers and southeast Asia's rail-babbler, form a clade. The analysis suggests that the rockfowl split from the common ancestor of their clade 44 million years ago. It is believed that the ancestor of this clade originated in Australia and spread to Africa. Though the white-necked rockfowl has no subspecies, it is believed to form a superspecies with the grey-necked rockfowl, with plumage and facial pattern being the primary differences between the two species. Common names used for this species include white-necked rockfowl, white-necked picathartes, yellow-headed picathartes, bare-headed rockfowl, and the less frequently used white-necked bald crow. Rockfowl is a reference to the species' habit of building mud nests on rock surfaces and caves. Picathartes refers to the species' scientific name. Bald crow is a reference to its featherless head and somewhat crow-like appearance, especially its beak. Description This rockfowl measures around in length, with its notably long tail contributing about . Adult rockfowl show little sexual dimorphism in plumage and the sexes cannot be told apart by appearance. On the adult, the head, excluding the chin and throat, is completely bare of feathers except for a thin layer of fuzz on the forehead. The head's skin is bright yellow except for two large, circular patches of black skin located just behind the eye and containing the ear; only a thin, wide patch of yellow skin on the crown prevents