153 



LESSEE BLACK-BACKED GULL. 



YELLOW-LEGGED GULL. 



PLATE CCXXVI. - PIG. I. 



Larus f/'scus, LijfN-ETTS. GMELES. 



THE present species builds on bare and barren islands, both those 

 of the sea-coast and those of inland lakes, as well as on the margin 

 of the mainland. Steep and precipitons cliffs are used, as well as low 

 marshy moors and sandy places a little way inland. 



The nest is a tolerable quantity of grass, with occasionally, though 

 rarely, some sea-weed placed loosely together in some slight hollow in 

 the rock or the adjacent herbage, the latter least frequently. 



The first or second week in June is the time of building. 



The eggs, two, three, or four in number, are of almost eveiy variety 

 of shade of green and brown, olive green, olive brown, and stone- 

 colour, thickly spotted with grey, brown of two shades, and brownish 

 black. 



VOL. III. 



