Page:Ornithological biography, or an account of the habits of the birds of the United States of America, vol 2.djvu/78

 when hunting wild turkeys by moonlight, mistaking them for these latter birds.

In Mississippi, Louisiana, Georgia, and Carolina, they prepare to breed early in the month of February, in common with most of the genus Falco. The most remarkable habit attached to their life is now to be seen: they assemble in parties of eight or ten, sometimes more, on large fallen logs, males and females, exhibiting the strongest desire to please mutually, and forming attachments in the choice of a mate, when each male, after many caresses, leads his partner off on the wing from the group, neither to mix nor associate with any more, until their offspring are well able to follow them in the air; after which, and until incubation takes place (about two weeks), they are seen sailing side by side the whole day.

These birds form no nest, yet are very choice respecting the place of deposite for their two eggs. Deep in the swamps, but always above the line of overflowing water-mark, a large hollow tree is sought, either standing or fallen, and the eggs are dropped on the mouldering particles inside, sometimes immediately near the entrance, at other times as much as twenty feet within. Both birds alternately incubate, and each feeds the other, by disgorging the contents of the stomach, or part of them, immediately before the bird that is sitting. Thirty-two days are required to bring forth the young from the shell; a thick down covers them completely; the parents, at that early period, and indeed for nearly two weeks, feed them by disgorging food considerably digested from their bills, in the manner of the common pigeons. The down acquires length, becomes thinner, and of a darker tint as the bird grows older. The young vultures, at three weeks, are large for their age, weighing then upwards of a pound, but extremely clumsy and inactive; unable to keep up their wings, then partly covered by large pin feathers, dragging them almost upon the ground, and bearing their whole weight on the full length of their legs and feet.

If approached at that time by a stranger or enemy, they hiss with a noise resembling that made by a strangling cat or fox, swell themselves, and hop sideways as fast as in their power. The parents, while sitting, and equally disturbed, act in the same manner; fly only a very short distance, waiting there the departure of the offender, to resume their duty. As the young grow larger, the parents simply throw their food before them; and, with all their exertions, seldom bring their offspring fat to the