12 



AUKS, MURRES, AND PUFFINS 



4. Bill stout, tip decurved, base with horn in breed- 

 ^ ^ ing- season Cerorhiiica, p. 13. 



O 4'. Bill slender and straight, base without horn. 



Cepplius, p. 16. 



. Bill much shorter than head, .80 or less. 

 4. Bill wider than deep at base. 



Ptychoramphus, p. 18. 

 4'. Bill much deeper than wide at base. 



5. Cutting edge of lower mandible concave. 



, Sw 6. Bill .GO, without knob at base. 

 * , Cyclorrhynchus, p. 14. 



Fig. 30. 



6'. Bill .40 or less, with knob at base. 



Simorhynchus, p. 14. 



Fig. 31. 



5'. Cutting edge of lower mandible convex. 

 6. Tarsus scutellate in front. 



Synthliboramphus, p. 15. 

 6'. Tarsus reticulate in front. 



Brachyramplius, p. 15. 



GENUS LUNDA. 



12. Lunda cirrhata Vail. 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 

 half of bill, 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. 

 Leiigth : 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. 

 Egg. — 1, laid usually on the bare ground at the end of a burrow or in 

 cavity among rocks on the face of a 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 



Fig. 32. 



