Le Vaillant tells us that in south-eastern Africa the native parrots fly in little flocks in search of food, bathe about noon, and hide themselves among the foliage during the overpowering heat of the sun. Towards evening they disperse themselves, after which they again bathe, and then fly back to the same roosting-place from which they had departed in the morning. These roosting-places are very various--sometimes the thickly-leaved top of a tree, sometimes a rock full of holes, often a hollow tree trunk; the situation last mentioned seems to be especially sought after. "Their sleeping-place," says Audubon, speaking of the American parrakeets, "is a hollow tree, or the hole chiselled out in some tree's trunk, to be the nestling-place of the larger woodpeckers, that is, in case these are not occupied by their true owners. In the gloaming large flocks of parrots assemble around old hollow sycamores, or other trees of similar character; and may be seen immediately in front of the entrance clinging to the bark, until one after another they disappear through the hole that leads into the interior, in order to pass the night. When a hollow of this description is not sufficiently large to accommodate the numbers that are assembled, those that come last are content to suspend themselves by their bill and claws from the bark before the entrance. "We have ourselves, in the primitive forests around the Blue River, in Africa, repeatedly watched the parrots at twilight, slipping one after another into their hole, and have observed them ranged with great regularity around the many perforations in the trunk of some old Adansonia. "In India, the Collared Parrot, as Layard informs us, sleeps among the thickets of bamboos. "All Parrots, Bee-eaters, Grakles, and Crows from districts extending for many miles around, pass the night in flocks among the great bamboo plantations, where the dull rushing sound caused by their flutterings, constantly heard from sundown till dark, and from the first grey dawning in the east until long after sunrise, might almost be supposed by the observer to proceed from numerous steam-engines in full work. Many of these flocks returning late in the evening from their excursions, fly so near to the ground that they scarcely clear the obstacles to their course; indeed, they do not always succeed in doing so; for, several nights together, we have picked up parrots which had flown against walls or similar obstructions, and had been killed in consequence." Layard gives a very lively account of the behaviour and doings of the Alexander parrot (a species commonly met with in Ceylon), at one of their sleeping-places.