This is a large non-migratory bird found in parts of the Indian Subcontinent, Southeast Asia and Australia. The tallest of the flying birds, standing at a height of up to 1.8 m (5.9 ft),they are conspicuous and iconic species of open wetlands. They forage on marshes and shallow wetlands for roots, tubers, insects, crustaceans and small vertebrate prey. They form long-lasting pair-bonds and maintain territories within which they perform territorial and courtship displays that include loud trumpeting, leaps and dance-like movements. In India they are considered symbols of marital fidelity, believed to mate for life and pine the loss of their mates even to the point of starving to death. Our Prime Minister Dr.Manmohan Singh has also written a poem on these graceful creatures. Name the bird.