Young squabs, like all other young birds that are naked when hatched, are ugly little things. They have apparently insatiable appetites, and their mouths seem to be always open. They are fed by the parents with pigeon milk, which is simply the usual food of the old birds softened in the crop. The pigeon has the power of disgorging the contents of the crop at will, and feeds its young by forcing food from its crop into their mouths. When they are well fed, the squabs grow very fast. Young Homers four weeks old often weigh from three quarters of a pound to a pound, or even more, and are ready for market. Many of the fancy varieties of pigeons are hard to rear, because the abnormal structure of the beak or the interference of peculiar feather characters prevent the old ones from feeding their young properly. All the breeds described in detail in the preceding chapter are known as good feeders.
Fig. 219. Dressed squabs. (Photograph from Dr. J. G. Robinson, Pembroke, Massachusetts)
Pigeons will breed nearly the year round, stopping only while molting, but in cold climates many young birds die in the nests in winter. Those who are breeding for market take this as one of the risks of their business. If only half of the squabs are reared in winter, the profits may be as great as when the actual results are much better, because in winter the prices are much higher than at the seasons when squabs are most easily produced. Fanciers do not usually allow their pigeons to breed during the coldest winter months, but take the eggs from the nests or keep the sexes separate until spring approaches. The object of the fancier is to produce specimens having the finest possible development of form and color. He cannot do this successfully under conditions that cause heavy losses. The birds may grow under such conditions but will not have the superior quality that he desires, and so he finds it more profitable to concentrate all his attention upon the birds that he can produce when the weather is most favorable.
CHAPTER XIX
CANARIES
The canary is the only common cage bird. There are about fifty kinds of birds that make desirable pets, but very few of them will breed in small cages, and many will not breed in confinement even when kept in large aviaries. In the United States the number of kinds of cage birds is restricted by state laws which prohibit keeping native song birds in captivity. Such laws are necessary to preserve the birds. Before these laws were passed, great numbers of song birds were trapped every year to send to Europe, where the keeping of cage birds as pets is more popular than in America. Song birds from other parts of the world may be kept in this country, but most of them are so scarce and expensive that few people would buy them even if the canary were not a more satisfactory pet.
Description. The common domestic canary is a small bird, about five inches in length, very lively and sprightly in manner, and in color yellow or a greenish gray and yellow. The male and female are so much alike that the sex cannot be positively determined by the appearance. Although it often happens that the male is more slender in form and brighter in color, the voice is a better index of sex and, in mature birds of good singing stock, is very reliable. The male is the singer. The female also has a singing voice, but it is so inferior in quality to that of the male that few people care for it.