REPTILES AND BIRDS. 



The most remarkable species of the Sea Gull are the following : 



The Great Black-backed Gull (Larus maximus, Fig. 103) is of 



a pure white, with a black back. It is very common in northern 



Fig. 103. Great Black- backed Gull. 









Fig. 104. Grey Gull. 



regions, and habitually visits the shores of the Atlantic to the coast 

 of France. 



The Herring Gull (Larus argentafus) is white, with a blue back. 

 It is not so large as the previous bird. It is seen throughout the 

 year on the coasts of the Mediterranean and the Atlantic, frequently 

 associated with the Common Grey Gull (Fig. 104). 



