TUBE-NOSED SWIMMERS 
100. Wilson’s Petrel. Oceanites oceanicus. 
Breeds in the southern hemisphere in February 
and March and spends the summer off! the Atlan- 
tic coast as far north as Newfoundland. This spe- 
cies can be distinguished from Leach Petrel by 
its square tail and from the Stormy Petrel by its 
large size and yellow webs to its feet. These 
birds are the greatest wanderers of the genus, 
being found at different seasons in nearly all 
quarters of the globe. Their single egg is white. 
Size 1.25 x .90. 
[110.] White-bellied Petrel. 
Fregetta gr allaria. 
A small species (length about 7.5 inches) in- 
habiting southern seas. Recorded once at Flor- 
ida. General plumage blackish. Upper tail cov- 
erts, bases of tail feathers, under wing coverts, 
and abdomen, white. 
[111.] White-faced Petrel. Pelagodroma 
marina. 
Range. — Southern seas, accidentally north to 
the coast of Massachusetts. This beautiful spe- 
cies is of about the same size as the Leach’s 
Petrel. It has bluish gray upper parts; the whole 
under parts, as well as the forehead and sides 
of head, are white. 
White 
Wilson’s Petrel 
White-hilled Petrel 
White-faced Petrel 
These birds have the same characteristics as do others of the species, pat- 
tering over the water with their feet as they skim over the crests and 
troughs of the waves. They are not uncommon in the waters about New 
Zealand where they breed. Their single eggs are about the same as Leach’s 
Petrel, are brilliant white and are, very strongly, for a Petrel egg, wreathed 
about the large end with dots of reddish brown. Size 1.32 x .90. Data.— Chat- 
ham Is., New Zealand, January 7, 1901. Egg laid at end of a burrow. Collec- 
tor, J. Lobb. This egg is in Mr. Thayer’s collection. 
»v- V 
71 
