bar headed geese, anser indicus, kaziranga national park, assam

anatidae animal anser anseriformes anserinae anserini asia asian assam aves bar barheaded beak bird birds birdwatching central duck eulabeia fauna feather flying fowl fowls geese germany goose gray grey head headed india indicus kaziranga lake life mountain national natural nature neck one park river streifengans tibet tibetan true water waterbird waterfowl wetland white wild wildfowl wildlife