Diving Birds 



pursuit offish and ottier sea-food, wliich grebes and loons do not, 

 many ornitiiologists to the contrary notwithstanding. On land 

 the bird moves with a shuffling motion, laboriously and with the 

 underparts often dragging over the ground. Agreeing in general 

 aspects, the birds of this family differ greatly in the form of the 

 bill in almost every species. This feature often takes on odd 

 shapes during the nesting season, soft parts growing out of the 

 original bill, then hardening into a horny substance, showing 

 numerous ridges and furrows, and sometimes becoming brilliantly 

 colored, only to fade away or drop off bit by bit as winter ap- 

 proaches. 



Puffm or Sea Parrot 



Black Guillemot 



Briinnich's Murre 



Common Murre 



Californian Murre 



Razor-billed Auk 



Dovekie or Sea Dove 



