what is the sarus crane?
It is a large non-migratory crane found in parts of the Indian subcontinent, Southeast Asia, and Australia
Sarus crane
The sarus crane ("Antigone antigone") is a large non-migratory crane found in parts of the Indian subcontinent, Southeast Asia, and Australia. 
worlds tallest flying bird mate with a single partner UNANSWERABLE
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Sarus crane [SEP] Introduction
The sarus crane ("Antigone antigone") is a large non-migratory crane found in parts of the Indian subcontinent, Southeast Asia, and Australia. The tallest of the flying birds, standing at a height up to , they are a conspicuous species of open wetlands in south Asia, seasonally flooded "Dipterocarp" forests in Southeast Asia, and "Eucalyptus"-dominated woodlands and grasslands in Australia. The sarus crane is easily distinguished from other cranes in the region by the overall grey colour and the contrasting red head and upper neck. They forage on marshes and shallow wetlands for roots, tubers, insects, crustaceans, and small vertebrate prey.