Explanation
The national bird of India is:
(D) Peacock.
The Peacock (scientifically known as Pavo cristatus) is the national bird of India. It is known for its vibrant and beautiful plumage, particularly the long and colorful feathers of the male, which are displayed during courtship dances. The Peacock holds cultural and religious significance in India and is recognized as a symbol of grace, beauty, and pride.