The correct answer is Ostrich.

• Ostrich:
  • The largest and heaviest living bird is the North African ostrich.
  • Males can be up to 9 feet tall and can weigh up to 345 pounds, and when fully grown they have one of the most advanced immune systems of any animal.
  • South Africa was the first country to use the commercial potential of ostrich products.
  • The creature is valuable not only for their large soft white feathers but also for their meat and their skins.

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• Albatross:
  • Albatrosses are very large seabirds in the family Diomedeidae.
  • They range widely in the Southern Ocean and the North Pacific.
• Emu:
  • The emu (Dromaius novaehollandiae) is the second-largest living bird by height, after its ratite relative, the ostrich.
  • It is endemic to Australia where it is the largest native bird.
• Peacock:
  • Peacocks are ground feeders that eat insects, plants, and small creatures.
  • There are two familiar peacock species.
    • The blue peacock lives in India and Sri Lanka,
    • While the green peacock is found in Java and Myanmar (Burma).