ts own burrows. It also nests among the cliffs placing its
eggs among the rocks in any crevice or tunnel which may offer a dark
retreat during the day for they are nocturnal in their habits. The
single egg which they lay is dull white in color, the inside of the
shell being a pale green, which color can only be seen by holding the
egg to the light. They are generally slightly nest stained. Size 1.80 x
1.30. Data.--Coronado Islands, Cal., March 23, 1897. Single egg laid on
the bare ground at end of a burrow three and one-half feet long.
Collector, E. A. Shives.

[Illustration 026: Horned Puffin. Rhinoceros Auklet. Cassin Auklet.]
[Illustration: White.]
[Illustration: left hand margin.]
[Illustration: RHINOCEROS AUKLET. Color white, sometimes heavily
blotched, as above, and again unspotted.]

Page 25

17. PAROQUET AUKLET.--_Phaleris psittacula._

Range.--The Alaskan Coast, casually farther south in winter.

This bird is about the same size as the preceding, and the plumage is
similar, except that it has no white spot over the eye, and the breast
is white. It also has a slender plume extending from back of the eye.
The bill is very peculiar, being quite deep and rounded and having an
upward tendency. It is orange red in color. They breed very commonly on
the islands of Bering Strait. Their eggs are laid in the crevices of the
cliff, often several feet in and by a crooked path so that it is
impossible to reach them. The single chalky white egg is laid in May.
Size 2.30 x 1.45. Data.--Rocky Islet in the Aleutians, June 22, 1890.
Single egg laid on bare rock in a deep crevice. Collector, Capt. S.
Wilson.

18. CRESTED AUKLET. _Aethia cristatella._

Range.--Alaska Coast, similar in form and plumage to the latter, except
that the whole under parts are gray and it has a crest of recurved
feathers. The nesting season begins in May, the birds nesting upon the
same islands and in the same kinds of sites as the last species. The
single egg is chalky white. Size 2.10 x 1.50. Data.--Unak Is., Alaska,
July 1, 1900. Egg laid in a crevice among the rocks. Collector, F.
Weston.

19. WHISKERED AUKLET. _Aethia pygmaea._

Range.--The Alaska Coast.

Much smaller than the preceding; but 7.5 in. in length. Breast gray,
belly white; a small tuft of recurved feathers on the forehead and
slender white plumes from base of bill over the eye and from under the
eye, backwards. The bill in summer is a bright vermillion color. On some