africa african anas animal animals aquatic beak beautiful behavior behaviour bharatpur billed bird birds creature cute dam duck ducks ecology erythrorhyncha etosha extreme eye farm farming feather flight fly flying fowl gliding goose knob lake lakes landing marsh marshes motion national natural nature outdoor park poecilorhyncha pond ponds portrait rajasthan red reflection river rivers south southern spot standing strange stretching swamp swamps swim swimming taking off teal unique unspoiled wading water webbed wet wetland wetlands wild wildlife wings