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The portion of a bird's head found between the forehead —demarcated by an imaginary line drawn from the anterior corners of the eyes—and through the "remainder of the upper part of the head", to the superciliary line. The occiput or hindhead, is the posterior part of the crown. [133] cryptic plumage Also defined: phaneric plumage.
Bycanistes subcylindricus is a moderately large bird of 60 to 70 cm with a wing span of 70 to 96 cm. It is recognizable by its black plummage for the higher body and wings alongside and white plummage on the lower body and wings with black feathers amongst the white feathers of the tail, particularly the top tail feathers and the base of the tail feathers.
It has a black head, nape and throat, giving it the appearance of a black hood, which is bounded by a white neck collar, [25] which is around 3.2 cm (1.2 in) wide. The black hood is slightly glossy in bright light, can fade a little with age, [ 26 ] and is slightly duller and more brownish in the adult female.
The name is the Latin word for "shouter" from clamare, "to shout". The specific epithet jacobinus and the English name Jacobin refer to the pied plumage which resembles the black and white garments of monks belonging to the Dominican Order. In France Dominicans were known as "Jacobins". [8] The three subspecies with their breeding ranges are: [9]
The tomtit is a small (13 cm, 11 g) bird with a large head and a short bill. The male North Island subspecies has black head, back, wings (with a white wing-bar), and a white belly. The subspecies from South Island, the Chatham Islands, and Auckland Islands are similar, but have a yellow band across the breast between the black head and white ...
The male has black upperparts, head and throat apart from a white shoulder patch. The underparts and the sides of the long tail are white. Females are greyish black above and greyish white under. Young birds have scaly brown upperparts and head. The nominate race is found on the Indian subcontinent and the females of this race are the palest.
As its name suggests, this is a black and white eagle, resembling the small typical eagles sometimes separated in "Hieraaetus". It is some 20–24 in (51–61 cm) long overall and weighs about 30 oz (850 g). The head, neck and body are white; a small crest forms a black spot on top of the head, and the area around the eyes, particularly towards ...
The genus name is derived from Ancient Greek βουκέφαλος bouképhalos, ' bullheaded ', from boûs ' bull ', and kephalḗ, ' head ', a reference to the oddly bulbous head shape of the species. The species name albeola is a diminutive of Latin albus meaning ' white '. [6]