SLENDER-BILLED SHEARWATER 



"Life Histories of North American Petrels and 

 Pelicans and Their Allies," Bull. 121, Nat. Mus., 

 p. 87. 



3. Puffinus tenuirostris (Temminck) 

 Slender-billed Shearwater 



Sexes alike. Length, about 356 mm. (14.00 

 in.); tail about 89 mm. (3.50 in.). Sooty black 

 above, shading to black on wing quills and tail 

 feathers; below smoky gray, paler on throat; 

 under tail coverts sooty blackish. Bill (dry) 

 dusky greenish yellow ; feet (dry) yellowish. 



Breeds in the Australian and New Zealand 

 regions, migrating north in the season that is 

 summer in the north. Apparently of only acci- 

 dental occurrence in the Bay of Panama. 



Hallinan says, "Naos Island June 8, 1915. 

 Male. Picked up on the water. There were 

 several floating on the water in the vicinity, 

 apparently exhausted. . . . This observation ex- 

 tends the known range of this species southward 

 into Central America." 



9. Family HYDROBATID^E 



The Petrels 



A large family of sea birds very closely 

 related to the shearwaters, but mostly of 

 smaller size (some of them scarcely larger 

 than an ordinary song bird) with more per- 

 fectly developed tubular nostrils and usu- 

 50 



