The country whose national bird is the peacock is India. Specifically, the Indian peacock (Pavo cristatus) was declared the national bird of India on February 1, 1963, due to its cultural significance, striking beauty, and widespread presence across the country

. The Indian peacock is known for its colorful plumage, including a fan-shaped crest of feathers and a spectacular bronze-green tail, and it holds a special place in Indian culture and mythology

. In summary:

• National bird: Indian peacock (Pavo cristatus)
• Country: India
• Declared national bird: February 1, 1963
• Reasons: Cultural significance, beauty, widespread presence, and symbolic representation of India