FAMILY PUFFINID^E 



Winter plumage. Throat white. Bill with- 

 out black band. 



Young. Similar to adults in winter. 



Dr. Chapman informs me that Mr. Van Tyne 

 has found this grebe nesting in the vicinity of 

 Barro Colorado Island. 



8. Family PUFFINID^ 

 The Shearwaters and Fulmars 



The shearwaters, the only Panama repre- 

 sentatives of the family, are long-winged, 

 web-footed sea birds, gull-like in size and 

 build, but distinguishable by the bill, which 

 is fairly long, hooked at the tip and has the 

 nostrils produced into a pair of very short, 

 forwardly directed tubes ending obliquely. 

 Their plumage is brown or dusky, at least on 

 the upper parts. 



Shearwaters are oceanic birds, spending 

 their time ranging low over the ocean and 

 picking up what food they can from its sur- 

 face. They come ashore only to nest, breed- 

 ing in burrows in the ground or crevices in 

 rocks. 



i. Puffinus creatopus (Coues) 

 Pink-footed Shearwater 



Sexes alike. Length, 510 mm. (20.00 in.); 

 tail (middle feathers) 97 mm. (3.80 in.). Above 

 dusky grayish brown with paler edges to feathers 

 of back: below white, the sides of the neck and 



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