COMMON QVLL.—Lanis ccmus. 

 SKUA GULL. — Stercordrius catarrhactes. 



BLACK-BACKED GVLL.—Lanis m&cimvs. 

 KITTIWAKE GVhh.—Sissa trydactyloL 



the -water. It also eats eggs and the smaller birds, a propensity which is shared by other 

 Gulls than the Skua. 



The Skua is no coward, however tyrannously it may behave, and is quite as ready to 

 repel a foe as to attack a victim. Even the golden eagle makes no head against the Skiia, 



