CLASS AVES. 



133 



near the land, but seldom visits it, except for nesting. 

 Whole companies then sit erect along the shore, where 

 they might easily be "mistaken for a party of choristers 

 with surplices and black gowns." The Penguin is con- 

 fined to the colder regions of the South.* 



ORDER PYGOPODES (pi gop'6 dez). 



The birds of this order have the tibise buried in the 

 body nearly to the heel. This prevents walking, but 

 favors swimming. Their feet are lobate or palmate, and 

 their plumage is glossy. 



PYGOPODES. 





FEET THREE-TOED, PALMATE. 

 FEET FOUR-TOED, LOBATE. 

 FEET FOUR-TOED, PALMATE. 



FIG. 234. 



Hallux absent. 

 Hallux lobate, free. 

 Hallux connected. 



FIG. 225. 



Puffin and Auk. 



Grebe. 



Loon. 



Pod'iceps. Dobchick. ( T V) 



Fra ter' cii la arc' Ci ca. 

 Puffin, Arctic Kegions. ( 



The Puffin and Auk\ have three toes fully webbed, 

 short wings, and a general adaptation to a purely aquatic 



* The Patagoniaii Penguins are said to collect in such numbers at breeding- 

 places as to cover thirty or forty acres. The ground is laid out in squares for 

 their nests, as accurately as if a surveyor had been employed ; stones are removed, 

 streets made, a wall is thrown up on the windward side, and sentinels are posted. 



t The Great Auk (Al'ca impen'nis) is said to have become extinct within the 

 last half-century. A high value is placed upon the few specimens which have 



