12 
AUKS, MURRES, AND PUFFINS 
4. Bill stout, tip decurved, base with horn in breed¬ 
ing season ..... Cerorhinca, p. 13. 
Fig. 28. 
4'. Bill slender and straight, base without horn. 
Cepphus, p. 16. 
Fig. 29. 
3'. Bill much shorter than head, .80 or less. 
4. Bill wider than deep at base. 
Ptychoramphus, p. 13. 
4'. Bill much deeper than wide at base. 
5. Cutting edge of lower mandible concave. 
< Q> y 6. Bill .60, without knob at base. 
* Cyclorrhynchus, p. 14. 
Fig. 30. 
<1 
Fig. 31. 
6'. Bill .40 or less, with knob at base. 
Simorhynchus, p. 14. 
5'. Cutting edge of lower mandible convex. 
6. Tarsus scutellate in front. 
Synthliboramphus, p. 15. 
6'. Tarsus reticulate in front. 
Brachyramphus, p. 15. 
GENUS LUNDA. 
12. Lunda cirrhata Pall . Tufted Puffin. 
Bill compressed, nearly as high as long. Adults: upper parts sooty 
black; under parts dark grayish. 
Breeding plumage: sides of face 
white, a long crest of fine silky yel¬ 
low feathers over each eye ; terminal 
Fig. 32. 
Egg. — 1 , laid usually on the ba 
cavity among rocks on the face of 
half of bdl, and feet, bright red. 
Winter plumage: sides of head 
dusky, and without crests; horny 
covering of base of bill replaced by 
soft dusky brown skin; feet flesh 
color. Young in first winter: similar 
to winter adult, but with rudiments 
of light brown crests, and sides of 
upper mandible without grooves. 
Length : 14.40-15.60, wing 7.75, bill 
1.30-1.45. 
Distribution. — Coast and islands 
from southern California to Alaska, 
and from Bering Strait to Japan, 
ground at the end of a burrow or in 
cliff. 
The tufted puffins nest preferably among cliffs and on earth and 
grass-covered edges of bluffs, and in such places the ground is often 
