60 TOTIPALMATE SWIMMERS. 



The single egg is placed in a cavity of 

 rocky cliffs on ocean islands. It is purplish 



Fig. 39. 



Wilson Petrel. 



brown spotted with darker brown. The 

 downy young are at first wholly white then 

 dark feathers appear on the back. 



Fig. 40. 



Bill of White Pelican. 



The flight is steady and direct with rapid 

 wing-beats, but the birds can turn in air 

 and circle with ease. They procure their prey 

 by diving like terns. Their cries are loud 

 and harsh. Gregarious when breeding, but 

 solitary at other times. Tropical and sub- 

 tropical in distribution. The sexes are sim- 

 lar. 



