“That is apparently the way of it. The disgorged [[147]]food is a pap of seeds all ground up fine in the crop; but for the first three or four days after hatching a special food is given, fine and strengthening, suited to the weakness of the little one. It is a white substance, almost liquid, having the appearance of real milk. It does not come entirely from digested food; for the most part it consists of a sort of milkfood that is distilled by the stomach on this occasion only. So for the first days of the brood’s rearing the pigeons have, deep down in the throat, a sort of milk factory, or what one might call the equivalent of an udder.”
“That reminds me,” Jules interposed, “of a joke common enough among us fellows. When we want to gull some poor innocent, we tell him that pigeons suck. This jest comes nearer the truth than is commonly thought. Pigeons do not suck the breast, it is true, but it might well enough be said that they are suckled, since what they are fed on has so much resemblance to milk.”
“Little pigeons stay in the nest a long time,” resumed Uncle Paul. “Entirely covered with feathers and almost as large as their parents, they still continue to receive parental care. To induce them to shift for themselves and give up their place when the time for a new laying approaches, some cuffs have to be given to these spoiled children that are so reluctant to leave home. But at last they consent, though not without returning from time to time to torment the mother with their lamentations and to beg her for something to eat. The father, less weak [[148]]on the side of his affections, thenceforth receives these importunate lazy-bodies with a peck of the beak.
“Let us consider certain other details of the pigeon’s habits. I will not tell you, these things being pretty well known to you, of the cooings of the pigeon when it puffs out its throat, of its ceremonious salutations, its bowing to the very ground, its pirouettes when it shows off before its mate. I shall interest you more by acquainting you with its gregarious instinct, which impels it to assemble in immense flocks when it travels, in its wild state, to find food.” [[149]]
CHAPTER XVI
A STORY FROM AUDUBON[1]
“Here is what we are told on this subject by the celebrated ornithologist, Audubon, whom I have already quoted in describing to you the habits of the turkey as it is found in its free state in the great forests of its native land.
“ ‘The passenger pigeon, or, as it is usually named in America, the wild pigeon, moves with extreme rapidity, propelling itself by quickly repeated flaps of the wing, which it brings more or less near the body, according to the degree of velocity which is required.…
“ ‘This great power of flight is seconded by as great a power of vision, which enables them, as they travel at that swift rate, to inspect the country below, discover their food with facility, and thus obtain the object for which their journey has been undertaken. This I have also proved to be the case, by having observed them, when passing over a sterile part of the country, or one scantily furnished with food suited to them, keep high in the air, flying with an extended [[150]]front, so as to enable them to survey hundreds of acres at once. On the contrary, when the land is richly covered with food, or the trees abundantly hung with mast, they fly low, in order to discover the part most plentifully supplied.…