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It has a flattened, powerfully hooked, beak surrounded by deep chestnut rictal bristles up to 5 centimetres (2.0 in) long. The adult weighs 350–475 g (12.3–16.8 oz) but the chicks can weigh considerably more, at up to 600 grams (21 oz), when their parents feed them a good deal of fruit before they fly. [ 7 ]
The beaks of accipitrids are strong and hooked (sometimes very hooked, as in the hook-billed kite or snail kite). In some species, there is a notch or 'tooth' in the upper mandible. In all accipitrids, the base of the upper mandible is covered by a fleshy membrane called the cere, which is usually yellow in colour.
Others have noted the apparent lack of predatory features in the skull, such as a prominently hooked beak, as evidence that Gastornis was a specialized herbivore (or even an omnivore) of some sort, perhaps having used its large beak to crack hard foods like nuts and seeds. [32]
The Accipitriformes are known from the Middle Eocene [citation needed] and typically have a sharply hooked beak with a soft cere housing the nostrils. Their wings are long and fairly broad, suitable for soaring flight, with the outer four to six primary feathers emarginated. They have strong legs and feet with raptorial claws and opposable hind ...
The great frigatebird was venerated by the Rapa Nui people on Easter Island; carvings of the birdman Tangata manu depict him with the characteristic hooked beak and throat pouch. [75] Its incorporation into local ceremonies suggests that the now-vanished species was extant there between the 1800s and 1860s.
Accipitridae is a family of birds of prey which includes hawks, eagles, kites, harriers, and Old World vultures. These birds have very large powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight. White-tailed kite, Elanus leucurus; Swallow-tailed kite, Elanoides forficatus (*)
Their nostrils are enclosed in one or two tubes on their straight deeply-grooved bills with hooked tips. The beaks are made up of several plates. Their wings are long and narrow; the feet are webbed, and the hind toe is undeveloped or non-existent; their adult plumage is predominantly black, white, and grey. [39]
A southern royal albatross: Note the large, hooked beak and nasal tubes. The albatrosses are a group of large to very large birds; they are the largest of the Procellariiformes. The bill is large, strong, and sharp-edged, with the upper mandible terminating in a large hook.