This cotinga is a solitary bird, and utters only a monotonous whistle, which sounds like _quet_. Another has a purple breast with black wings, and tail and every other part of a light and glossy blue. The pompadour cotinga has a purple body and white wings, their four first feathers tipped with brown. None of these have any song. The last, however, utters sounds something like _wallababa_. They feed on the fig, wild guaco, and other fruit-trees. THE CAMPANERO, OR BELL-BIRD. Far-away in the forest a singularly loud and clear note, like the sound of a bell, is heard; mile after mile, and still the same strange note reaches the ear. A single toll; then a pause for a minute, then a pause again, then a toll, and again a pause; then for six or eight minutes no toll is heard; then another comes strangely and solemnly amid the tall columns and, fretted arches of the sylvan temple. Sometimes of a morning, and sometimes in the evening, and even when the meridian sun has silenced all the other songsters of the grove, that strange toll is heard. At length, high up on the dried top of an aged maura, a snow-white bird may be seen, no larger than a pigeon; and yet it is the creature who is uttering those strange sounds. It is another species of the cotinga--the well-known campanero, or bell-bird. On its forehead rises a spiral tube nearly three inches long, which is of jet-black, dotted all over with small white feathers. Having a communication with the palate, it enables the bird to utter these loud clear sounds. When thus employed, and filled with air, it looks like a spire; when empty, it becomes pendulous. Though, like most of its tribe, it is sometimes seen in flocks, it never feeds with other species of cotingas. The witty Sydney Smith, remarking on the account Waterton gives of the campanero, observes: "This single bird then has a voice of more power than the belfry of a cathedral ringing for a new dean. It is impossible to contradict a gentleman who has been in the forests of Cayenne; but we are determined, as soon as a campanero is brought to England, to make him toll in a public place, and have the distance measured." Had the witty dean been aware of the fact--stated by the astronomer and aeronaut, Mr Glaisher--that a female voice is heard a mile further than that of the most hirsute and sturdy "tar," he might have been less sceptical of the powers of the little cotinga to make itself heard for the distance of three miles through the pure and calm air of the tropics. THE UMBRELLA, OR FIFE-BIRD.