The Gull.] OF ORKNEV. 123 



with black, brown, and dirty white ; the larger feathers black ; 

 the bill black ; the legs of a dirty white ; but the colour of 

 the bill is a distinguishing mark in this from all the rest of the 

 gull-kind which are found here. 



Species 6. — The Common Gull. 



Common Sea-Mall, fVil. Orn, 345. Common Sea- Mall, or Mew, Raii St/n. Av, 

 127. Larus Canus, L/h. %s. 224. Brit.Zool. ^^^4:. Brit, Zool. Illus. 0,3. 

 Ore. White Maw, Sea-Maw. 



These are found everywhere; fill the rocks, bays, and 

 harbours in summer, in such a manner as to deafen one with 

 the clang which is among these and others ; so well known as 

 to need no description. 



Species 7. — The Tarrock. 



IVil. Orn. 346. UaiiSyn. Av. 128. Larus tridactylus, Lin, Sys. 224. Brit. 

 Zool. 425. Brit. Zool. Illus. 26. tab. 23. Sib. Scot, tab. 'iQ.Jig. 2. Ore. 

 Kittiwake. 



Th [s is the most frequent of the kind in Orkney; cover the 

 whole rocks in summer that at a great distance they appear 

 white with them ; they sit in tiers over one another, as thick 

 as one can press to one another ; often appear at the face of 



