"The high lands of Columbia," says Gould, "from Venezuela to some distance north of Santa Fé de Bogota, are the natural habitat of this fine species. It is there very generally spread over the temperate regions of the country, never ascending to the snow-capped hills, nor descending to the hot plains below, but frequenting the warm valleys, where a luxuriant vegetation, teeming with insect life, affords it a never-ceasing supply of nourishment. The comparatively short and feeble bill points out that minute insects constitute its principal food, and as its structure is so similar to the other species of the genus, we may infer that, like them, it tranquilly flits about among the low shrubs in secluded valleys, and does not ascend to the loftier trees." * * * * * The HELMET CRESTS (_Oxypogon_) have a helmet-shaped crest, broad wings, a straight tail, and lustreless plumage. LINDEN'S HELMET CREST. LINDEN'S HELMET CREST (_Oxypogon Lindeni_) is of an uniform pale copper-colour on the mantle and under side; a spot on the brow and sides of the head are black; the sides of the throat and the longest crest and neck-feathers are white; the feathers of the tail are brown, with white shafts. The length of this species is five inches and a half: the wing measures three inches, and tail two and a half. Linden first discovered this very striking bird in the Sierra de Morida, in Columbia, where it was living at an elevation of from 12,000 to 13,000 feet above the level of the sea. * * * * * THE LIGHT-BEAKS (_Levirostres_). The birds belonging to this order possess in common a moderate-sized or long and sharp beak, which is either quite straight or slightly curved. The legs are extremely small and feeble, rather adapted to a sedentary life than formed for locomotion. The plumage is thick, compact, and usually brilliantly tinted. * * * * *