GENERAL KNOWLEDGE

Detailed explanation-1: -The correct answer is Vulture. Vulture: Vultures are birds that can move their upper jaw.

Detailed explanation-2: -Modern birds have highly sophisticated jaws, much more flexible than our rigid skull and mandible. Birds can move their whole upper jaw, or parts of it, relative to their cranium, because of regions of thinner bone called bending zones.

Detailed explanation-3: -An exception to this is parrots (order Psittaciformes), which have acquired two novel jaw muscles that are anatomically peculiar and adaptive for feeding on hard-shelled nuts and seeds via strong adduction of the mandible [1–4].