THE FULMAR PETREL. Tue Petrels are large birds, living mostly far out at sea, or on barren islands, among rocks and icebergs, in the coldest regions of the Arctic and Antarctic circles. They venture further on the ocean than any other birds, and seem aroused to greater activity on the approach of the tempest. They fly, rest, and walk upon the waves. Steadily driven by the blast, their wide-spread wings seem scarcely to require any exertion. Their food is fish, shell-fish, and sea-wrack. The Petrels associate in great flocks to breed in the clefts of rocks, or in holes burrowed in the (114)