Edwards, in his voyage up the Amazon, observes, that when a party of Toucans alight on a tree, one usually acts the part of a sentinel, uttering the loud cry of "Tucano," whence they derive their name; the others disperse over the branches in search of fruit. While feeding they keep up a hoarse chattering, and at intervals unite with the noisy sentry, and scream a concert that may be heard a mile. Having appeased their appetites, they seek the depths of a forest, and there quietly doze away the noon. In early morning a few of them may be seen sitting quietly upon the branches of some dead tree, apparently awaiting the coming sunlight before starting for their feeding-trees. Some species of Toucans have been seen quarrelling with monkeys over a nest of eggs. Their carnivorous propensity has been strikingly shown in the specimens which have been kept in England. On the approach of any small bird the Toucan becomes highly excited, raises itself up, erects its feathers, and utters a hollow clattering sound, the irides of the eyes expand, and the Toucan is ready to dart on its prey. A Toucan, exhibited in St. Martin's-lane in 1824, seized and devoured a canary-bird. Next day Mr. Broderip tried him with a live goldfinch. The Toucan seized it with the beak, and the poor little victim uttered a short weak cry, for within a second it was dead, killed by the powerful compression of the mandibles. The Toucan now placed the dead bird firmly between its foot and the perch, stripped off the feathers with its bill, and then broke the bones of the wings and legs, by strongly wrenching them, the bird being still secured by the Toucan's foot. He then continued to work with great dexterity till he had reduced the goldfinch to a shapeless mass. This he devoured piece by piece with great gusto, not even leaving the legs or the beak of his prey: to each morsel he applied his tongue as he masticated it, chattering and shivering with delight. He never used his foot, but his bill, for conveying his food to his mouth by the sides of the bill.