 The International Union for Conservation of Nature ( IUCN ) estimates the population of the fulvous whistling duck to be from 1 @.@ 3 – 1 @.@ 5 million individuals . This may be an underestimate since regional assessments suggest 1 million birds in the Americas , 1 @.@ 1 million in Africa and at least 20 @,@ 000 in South Asia . Although the population appear to be declining , the decrease is not rapid enough to trigger the vulnerability criteria . The large numbers and huge breeding range mean that this duck is classified by the IUCN as being of Least Concern . It is one of the species to which the Agreement on the Conservation of African @-@ Eurasian Migratory Waterbirds ( AEWA ) applies . 
