The food of the paroquet was entirely vegetable, consisting of the seed of the cockle-bur, as already stated, sycamore and cypress seed, pecan and beech nuts, the fruit of the pawpaw, mulberries, wild grapes and various other wild fruits as well as cultivated fruits, the seeds of pine cones and the burgrass. Grains of various kinds were eaten while in the milk, and Mr. Frank M. Chapman found them eating the seeds of thistles. So varied a diet enabled these birds to pass the winter in the northern parts of their range as well as farther south. It has been stated that paroquets have been found hibernating in hollow trees in the coldest winters. If they were actually found in such places they were undoubtedly simply taking refuge from some severe storm, to issue forth again when it had passed. The paroquet's strong, hooked beak was probably so formed for the cutting of stems and husks of plants and the crushing of seeds and nuts, but he also finds it useful in climbing about trees as an aid to his yoked feet, and as a partial support while he sleeps in some hollow tree, the bill being hooked over a projection or into a convenient crevice. Major Charles E. Bendire describes the flight as undulating, like that of the woodpeckers, but very swift, accompanied by a continuous chattering while on the wing. The birds remain together in flocks of from six to twenty individuals (before they became so scarce, by hundreds), and are very devoted to each other. The cries of a wounded companion will always recall the whole flock to his aid, thus enabling the hunter to kill every bird in the flock. It is this characteristic, no doubt, which has very largely caused the rapid disappearance of the birds before advancing civilization. The nesting-habits of the paroquet are in some doubt, but the evidence seems to indicate that the birds may rear their brood either in a cavity in a tree or build a slight nest after the fashion of the mourning-dove. Such nests seem to be largely confined to the cypress swamps of Florida. The eggs, several of which have been secured from birds in confinement, are pure glossy white, smooth, and rather ovate in shape, somewhat larger than those of the mourning-dove, and averaging 1.39 × 1.07 of an inch. These birds seem to nest in colonies, a fact which led Major Bendire to suggest that when the colonies were very large the birds were forced to build open nests from a lack of suitable nesting-places in cavities. The cry is described as "shrill and disagreeable, a kind of grating, metallic shriek." One call resembles the shrill cry of a goose. They sometimes give utterance to low conversational notes while perched.