After the brood can fly the Duck loses her primaries and becomes incapable of flight for a short time, but as soon as her quills are grown the whole family move off to join the flocks, which are now rapidly forming. Large numbers visit us yearly from abroad, and a spell of severe weather in midwinter still further increases their numbers.

The male has a glossy green head and neck, the latter being encircled by a narrow white ring; rump and tail coverts glossy greenish black, the four central coverts upturned; chest and breast deep chestnut; rest of under parts pale grey, vermiculated with black; bill greenish yellow; legs orange. The Duck is dark brown, the feathers having paler edgings. The young resemble the female, but the males have assumed their full dress by October. The male in eclipse has a plumage which approximates to that of the female. Length 23 in.; wing 11 in.

THE GADWALL
Anas strepera, Linnæus

The Gadwall is a scarce visitor to our shores, occurring irregularly along the east coasts of Scotland and England, but it is very rarely seen in the west or in Ireland. In a few places in Norfolk, where it was originally introduced, it breeds, and has of late years considerably increased both there and in the surrounding counties. In habits it resembles the Mallard. The eggs are usually ten in number and of a delicate creamy pink. It may be easily recognised on the wing by its white speculum.

On the Continent it nests in Central and Eastern Europe, its breeding range extending to the far north of Russia. It winters in the Mediterranean basin.

The adult male is greyish brown, with darker mottlings on the head and neck; back dark brown, with greyish markings; median wing coverts chestnut; greater coverts almost black. Under parts white, grey on the flanks and vent. Under tail coverts black. The female is marked with dark brown and buff much like a Wild Duck, but is recognisable by the white speculum. The young somewhat resemble the female. The white speculum forms a distinctive mark of this species at all ages. Length 20 in.; wing 10·5 in.

THE SHOVELLER
Spatula clypeata (Linnæus)

This bird is by no means rare with us in winter, when large numbers come over from abroad. It is essentially an inland species, preferring small and sheltered pieces of water rather than wide open stretches. Its most characteristic feature is the large flattened bill with which it feeds on the surface-swimming animalculæ and other insects, the broad lamellæ of the mandibles forming an efficient strainer. When feeding three or four will often follow each other in a circle, each feeding in the other’s wake. Of late years it has become more numerous as a breeding bird, and it now nests commonly in the Broads and other districts of Norfolk and the eastern counties. In Kent and the Midlands, Yorkshire and the North, it nests sparingly, as well as in some of the southern and eastern counties of Scotland. In Ireland it is a local but by no means scarce species. Except in the breeding season it is a very silent bird; when courting it moves its head up and down, uttering a low “took, took,” which is answered by the female. The nest is generally placed at some distance from the water in the middle of a dry grass-field, where there is hardly any cover beyond a small patch of grass more luxuriant than the rest.

The eggs, which number from eight to ten, are pale greenish buff in colour. The female sits very closely, and the male remains in attendance at no great distance and accompanies her when she comes off to feed. The incubation period of this species is rather shorter than with most Ducks, and lasts between twenty-one and twenty-three days. The young are solely looked after by the Duck, and when first hatched their bills show no trace of the broadening and flattening, characteristic of the adult.

During the summer the Drake assumes an “eclipse” plumage, which somewhat resembles that of the Duck. In October he begins, unlike most other species, to assume an “intermediate” plumage, in which the head is very dark but not metallic, and the white of the breast is obscured by dark transverse bars. The full plumage is not usually complete till the end of February or early in March.