68 



GANXETS. 



high in the air as it plunges into it. In mi- 

 grating the Gannet moves in irregular, strag- 

 ""lino: lines without svstem. 



BLUE-FACED GANNET. 



Ditt'ers from the Gannet in being much 

 smaller, 28, and in having the most of the 

 wings and tail (except the central feathers 



Fio-. 42. 



//7 'm 



Tropic Bird. 1-t). 



and base which are white) dark-brown. The 

 naked portions of the face are blue. Young, 

 with the head, neck, and upper parts dark- 



