Hint: India is a country rich in biodiversity and wildlife. There are a total of 1349 known species of birds as of 2019, out of which 78 are native to the country.
Complete answer: Option A: The Fulsunghano bird is the smallest bird in India. “Fulsunghano” being a Bengali term for flowering, the english name of the bird is Tickell’s Flowerpecker. It is 8 cm long in height and is one of the smallest birds found in Southern India and Sri Lanka.
Option B: Parrots are birds of over 300 species found in the tropics or subtropical regions across the world. Their sizes range between 8.6 cm (Buff Faced Pygmy Parrot) to 100 cm (Hyacinth Macaw).
Option C: The Great Indian Bustard is the largest flying bird in India. It is a ground bird with a height of about 1 metre, and weighs up to 15 kg. This bird inhabits dry grasslands and scrublands of India, and its largest population is found in the state of Rajasthan.
Option D: Indian Vultures are scavenger birds found in the Himalayas, Rajasthan, Karnataka, and the northern part of the subcontinent. They are 81 cm to 103 cm long, and weigh between 5.5 kg to 6.3 kg. It has been listed under the “Critically Endangered” list on the IUCN Red List since 2002.
Hence, the correct answer is option (C) The Great Indian Bustard.
Note: While The Great Indian Bustard (1m) and the Indian Vulture (81cm- 103cm) are almost very close to each other in height, it must be noted that the Great Indian Bustard (15 Kg) weighs more than two times the Indian Vulture (5.5 kg- 6.3 kg), making it larger than the latter.