Question

The bird with movable upper jaw is
A. Vulture
B. Parrot
C. Sparrow
D. Pigeon

Answer 1

Hint: Animals which swallow large prey and they hold grip on shaped food items have movable upper jaws. Being able to move the upper jaw is called cranial kinesis.

Complete answer:
> Option A which is vulture. Vultures are the specialised scavengers which feed on dead animals. They rarely attack healthy animals but they may attack the wounded animals. They mainly feed on carcasses of dead animals. Vultures are really important as they clean up dead animals and help to keep the ecosystem healthy and prevent the spread of diseases too. They have immovable jaws for maximum strength. They exert powerful bite forces. This option seems incorrect.

> Option B which is Parrot. Parrots have curved beaks, strong legs and clawed feet. These are mostly found bright coloured. Parrots are believed to be the most intelligent bird species and some of the species have imitating human voices too. Their jaws are movable since they swallow the prey whole and they grip awkwardly shaped food items. If we take an example then that would be parrots eating the nuts. These options seem correct one as these are birds with movable upper jaws.

> Option C which is Sparrow. Sparrows are found in most parts of the world. These are small birds and females are mostly found pale brown and grey in colour while the males are mostly found bright black, white and brown in colour. These do not have movable jaws and they don't even require a movable upper jaw as they eat small seeds. Therefore, this option does not seem to be the correct one.

> Option D which is Pigeon. Pigeons are several hundred species of birds which constitute family Columbidae. This bird family consists of birds and doves. They feed upon grains, seeds etc and therefore they do not have a movable upper jaw. Hence, this option cannot be the correct one.

Hence, the correct answer is option (B).

Note: Animals which feed upon large prey or food require a movable upper jaw to swallow and therefore from the above given options parrot is the bird which has an upper movable jaw.