BIRDS OF THE OCEAN AND SEASHORE 267 
nest. In a natural crevice or in a shallow burrow. 
egg. Pure white. Breeding-season: July and August (Norfolk Is¬ 
land); throughout the year in most localities. 
6. Fluttering Shearwater Puffinus gavia Forster 
gav'-i-a— N.L., gavia, a kind of gull. 
distribution. The seas of New Zealand, ranging to south-eastern 
and southern Australia. 
notes. Also called Brown-backed Petrel. Usually in flocks, fre¬ 
quenting chiefly the seas off the south coast of New South Wales. It is 
similar in habits and economy to the Little Shearwater. Breeds on 
both islands of New Zealand and on Snares Island. 
nest. In a chamber at the end of a burrow; lined with a few leaves. 
egg. Pure white. Breeding-season: October. 
7. Great-winged Petrel Pterodroma macroplera Smith 
Pter'-o-drom'-a—G k, pteron, wing; Gk, dromos, running: mac-rop’-ter-a 
—Gk, macros, large; Gk, pteron, wing. 
distribution. Southern oceans, between latitudes 50°S. and 30°S. 
notes. Also called Grey-faced Petrel. Usually in flocks, frequenting 
the seas off the south-western coast of Australia. It is similar in habits 
and economy to the Shearwaters. Breeds in colonies on islands off the 
south coast of Western Australia; also on the North Island of New 
Zealand, Tristan da Cunha, and Kerguelen and the Crozet Islands. 
nest. In a large chamber at the end of a burrow; lined with a few 
leaves and grass. 
egg. Pure white. Breeding-season: July to September. 
8. Soft-plumaged Petrel Pterodroma mollis Gould 
moV-lis— L., mollis, soft. 
distribution. Atlantic and Indian Oceans to latitude 50°S. 
notes. A rare visitor to the seas of south-western Australia. It is 
similar in habits and economy to the Soft-plumaged Petrel. Breeds on 
Madeira and Cape Verde Islands, Tristan da Cunha, and Gough, Ker¬ 
guelen, and St Paul Islands. 
nest. In a chamber at the end of a burrow. 
egg. White. Breeding-season: June, July, and October (northern 
hemisphere). 
9. White-headed Petrel Pterodroma lessoni Garnot 
lessoni- R. P. Lesson, French ornithologist (1794-1849). 
distribution. Southern oceans, from Antarctica to about latitude 
33° S. 
notes. Frequents the seas of south-western and southern Australia 
and Tasmania. It is similar in habits and economy to the other members 
