es oceanicus._

Breeds in the southern hemisphere in February and March and spends the
summer off the Atlantic coast as far north as Newfoundland. This species
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 grallaria._

A small species (length about 7.5 inches) inhabiting southern seas.
Recorded once at Florida. General plumage blackish. Upper tail coverts,
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 species 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.

These birds have the same characteristics as do others of the species,
pattering 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.--Chatham Is., New Zealand, January 7, 1901. Egg laid at end
of a burrow. Collector, J. Lobb. This egg is in Mr. Thayer's collection.

[Illustration 073: Wilson's Petrel. White-billed Petrel. White-faced
Petrel.]
[Illustration: White.]
[Illustration: deco.]
[Illustration: right hand margin.]

Page 72

TOTIPALMATE SWIMMERS. Order IV. STEGANOPODES
TROPIC BIRDS. Family PHAETHONTIDAE

Tropic Birds are Tern-like birds, having all the toes connected by a
web, and having the two central tail feathers very much lengthened.

112. YELLOW-BILLED TROPIC BIRD. _Phaethon americanus._

Range.--Tropical regions, breeding in the Bahamas, West Indies and the
Bermudas, casual in Florida and along the South Atlantic coast.

The Tropic Birds are the most strikingly beautiful of all the sea birds;
they are about 30 inches in length, of which their long slender tail
takes about 20 inches. They fly with the ease and grace of a Tern, but
with quicker wing beats. They feed on small fish, which the