CHAPTER VI.
_PETRELS._ Petrels—Characteristics—Changes of Plumage—Fulmar Petrel— Fork-tailed Petrel—Stormy Petrel—Manx Shearwater 241-258
_PETRELS._ Petrels—Characteristics—Changes of Plumage—Fulmar Petrel— Fork-tailed Petrel—Stormy Petrel—Manx Shearwater 241-258