290 CHONOS ARCHIPELAGO. [chap. xiii. 



bird, both in the inland channels and on the open sea. In its 

 habits and manner of flight, there is a very close resemblance 

 with the albatross ; and as with the albatross, a person may 

 watch it for hours together without seeing on what it feeds. 

 The "break-bones" is, however, a rapacious bird, for it was 

 observed by some of the oflficers at Port St. Antonio chasing a 

 diver, which tried to escape by diving and flying, but was con- 

 tinually struck down, and at last killed by a blow on its head. 

 At Port St. Julian these great petrels were seen killing and 

 devouring young gulls. A second species (Puftinus cinereus), 

 which is common to Europe, Cape Horn, and the coast of Peru, 

 is of a much smaller size than the P. gigantea, but, like it, of a 

 dirty black colour. It generally frequents the inland sounds 

 in very large flocks : I do not think I ever saw so many birds of 

 any other sort tog^ether, as I once saw of these behind the island 

 of Chiloe. Hundreds of thousands flew in an irregular line for 

 .several hours in one direction, AYhen part of the flock settled 

 on the water the surface was blackened, and a noise proceeded 

 from them as of human beings talking in the distance. 



There are several other species of petrels, but I will only 

 mention one other kind, the Pelacanoides Berardi, which offers 

 an example of those extraordinary cases, of a bird evidently be- 

 longing to one well-marked family, yet both in its habits an^ 

 structure allied to a very distinct tribe. This bird never leaves 

 the quiet inland sounds. "When disturbed it dives to a distance, 

 and on coming to the surface, with the same movement takes 

 flight. After flying by the rapid movement of its short wings 

 for a space in a straight line, it drops, as if struck dead, and 

 dives again. The form of its beak and nostrils, length of foot, 

 and even the colouring of its plumage, show that this bird is a 

 y)etrel : on the other hand, its short wings and consequent little 

 power of flight, its form of body and shape of tail, the absence of 

 a hind toe to its foot, its habit of diving, and its choice of situa- 

 tion, make it at first doubtful whether its relationship is not 

 equally close with the auks. It would undoubtedly be mistaken 

 for an auk, when seen from a distance, either on the wing, or 

 when diving and quietly swimming about the retired channels of 

 TJerra del Fuego. 



