The northern shoveler ( Spatulaclypeata), known simply in Britain as the shoveler, is a common and widespread duck. It breeds in northern areas of Europe and Asia and across most of North America, wintering in southern Europe, Africa, the Indian subcontinent, Southeast Asia, and Central, and northern South America.  This species is unmistakable in the northern hemisphere due to its large spatulate bill. The breeding drake has an iridescent dark green head, white breast and chestnut belly and flanks. In flight, pale blue forewing feathers are revealed, separated from the green speculum by a white border. In early fall the male will have a white crescent on each side of the face. In non-breeding (eclipse) plumage, the drake resembles the female. The female is a drab mottled brown like other dabblers, with plumage much like a female mallard, but easily distinguished by the long broad bill, which is gray tinged with orange on cutting edge and lower mandible. The female's forewing is gray. They are 48 cm (19 in) long and have a wingspan of 76 cm (30 in) with a weight of 600 g (1.3 lb).  Like Mallard , Common Teal and Wigeon, Northern Shovelers are common winter visitor in Pakistan, being among the earliest and latest migrant ducks (Late August to Late May). They prefer muddy pools that are drying out and flooded grassland,but will spend the day on large lakes and rivers.