28 



AUKS, MUKRES, PUFFINS, ETC. 



all around in summer, but in winter, when 

 the throat is white, the head is quite black. 

 Also differs from the Razor-bill when on the 



Fis. 18. 



Bill of Murre. 



water in not cockinf^ up its tail. In common 

 with the two following species it breeds on 

 the shelves of rocky cliffs from the (rulf of 

 St. Lawrence northward. One egg only is 

 laid. This is very large for the size of the 

 bird, pyriform, varying in color from white 

 to a bright blue-green, thickly spotted and 

 lined with l)la('k. All three species when an- 

 noyed utter a murmuring note like '^Mur-r-r^' 



