They are hatched in thirty days. They may generally be left with their mother upon the nest for her own time. When she moves coop her on the short grass if fine weather, or under shelter if otherwise, for a week or ten days, when they may be allowed to swim for half an hour at a time. When hatched they require constant feeding. A little curd, bread-crumbs, and meal, mixed with chopped green food, is the best food when first hatched. Boiled cold oatmeal porridge is the best food for ducklings for the first ten days; afterwards barley-meal, pollard, and oats, with plenty of green food. Never give them hard spring water to drink, but that from a pond. Ducklings are easily reared, soon able to shift for themselves, and to pick up worms, slugs, and insects, and can be cooped together in numbers at night if protected from rats. An old pigsty is an excellent place for a brood of young ducks.
Ducklings should not be allowed to go on the water till feathers have supplied the place of their early down, for the latter will get saturated with the water while the former throws off the wet. "Though the young ducklings," says Mr. W. C. L. Martin, "take early to the water, it is better that they should gain a little strength before they be allowed to venture into ponds or rivers; a shallow vessel of water filled to the brim and sunk in the ground will suffice for the first week or ten days, and this rule is more especially to be adhered to when they are under the care of a common hen, which cannot follow them into the pond, and the calls of which when there they pay little or no regard to. Rats, weasels, pike, and eels are formidable foes to ducklings: we have known entire broods destroyed by the former, which, having their burrows in a steep bank around a sequestered pond, it was found impossible to extirpate." If the ducklings stay too long in the water they will have diarrhœa, in which case coop them close for a few days, and mix bean-meal or oatmeal with their ordinary food.
A troop of ducks will do good service to a kitchen garden in the summer or autumn, when they can do no mischief by devouring delicate salads and young sprouting vegetables. They will search industriously for snails, slugs, woodlice, and millipedes, and gobble them up eagerly, getting positively fat on slugs and snails. Strawberries, of which they are very fond, must be protected from them. Where steamed food is daily prepared for pigs and cattle, a portion of this mixed with bran and barley-meal is the cheapest mode of satisfying their voracious appetites. They should never be stinted in food.
To fatten ducks let them have as much substantial food as they will eat, bruised oats and pea-meal being the standard, plenty of exercise, and clean water. Boiled roots mixed with a little barley-meal is excellent food, with a little milk added during fattening. They require neither penning up nor cramming to acquire plumpness, and if well fed should be fit for market in eight or ten weeks. Celery imparts a delicious flavour.
The Aylesbury is the finest breed, and should be of a spotless white, with long, flat, broad beak of a pale flesh colour, grey eyes, long head and neck, broad and flat body and breast, and orange legs, placed wide apart. As it lays early, its ducklings are the earliest ready for market. They have produced 150 large eggs in a year, and are better sitters than the Rouen.
The Rouen is hardy and easily reared, but rarely lay till February or March. They thrive better in most parts of England than the Aylesburys, and care less for the water than the other varieties. They are very handsome, and weigh eight or nine pounds each, and their flesh is excellent.
The Muscovy duck is so called, says Ray, "not because it comes from Muscovy, but because it exhales a somewhat powerful odour of musk." Little is known of its origin, which is generally thought to be South America; nor has the date of its introduction into Europe been ascertained. "This species," says Mr. W. C. L. Martin, "will inter-breed with the common duck, but we believe the progeny are not fertile. The Musk duck greatly exceeds the ordinary kind in size, and moreover, differs in the colours and character of the plumage, in general contour, and the form of the head. The general colour is glossy blue-black, varied more or less with white; the head is crested, and a space of naked scarlet skin, more or less clouded with violet, surrounds the eye, continued from scarlet caruncles on the base of the beak; the top of the head is crested, the feathers of the body are larger, more lax, softer, and less closely compacted together than in the common duck, and seem to indicate less aquatic habits. The male far surpasses the female in size; there are no curled feathers in his tail." The male is fierce and quarrelsome, and when enraged has a savage appearance, and utters deep, hoarse sounds. The flesh is very good, but the breed is inferior as a layer to the Aylesbury or Rouen.
The Buenos Ayres, Labrador, or East Indian, brought most probably from the first-named country, is a small and very beautiful variety, with the plumage of a uniform rich, lustrous, greenish-black, and dark legs and bills; the drake rarely weighing five pounds, and the duck four pounds. Their eggs are often smeared over with a slatey-coloured matter, but the shell is really of a dull white.