LAND-BIRDS. 



ORDER TT7BINARES: TUBE-NOSED SWIMMERS. 



Family Frocellaiidae : Shearwaters, Petrels, etc. Page 268. 



1 Species. 



The various Petrels are comprised in this family ; they 

 are off-shore birds of Gull-like appearance. Dr. Coues says 

 of one group, that their " flight is peculiarly airy and flicker- 

 ing, more like that of a butterfly than like ordinary birds ; 

 they are almost always seen on the wing, appearing to swim 

 little if any, and some, if not all, breed in holes in the 

 ground like Bank Swallows." 



ORDER LONGIPENNES: LONG-WINGED SWIMMERS. 



Family Laridse : Gulls and Terns. Page 269. 



7 Species. 



Off-shore birds, breeding on the coastwise islands. The 

 Gulls are large and stout, with hooked bills, large feet, and 

 strong wings that make their flight even and steady, and 

 not impulsive and dashing like the Terns'. They both dive 

 for their food and glean it from the surface of the water. 

 The Terns are more slender, have greater rapidity in flying, 

 and/orfcec? tails; the tails of the Gulls are never forked. 



ORDER FYGOPODES: DIVING BIRDS. 

 Family Alcidse : Auks, etc. Page 275. 



1 Species. 



Our species, the Dovekie or Sea Dove, is an off-shore bird 

 seen usually about lighthouses and flying in the wake of 

 vessels. It is a rather small-sized, dusky bird, white below, 

 with a clumsy, awkwardly-shaped body, and long wings. 



Family Urinatoridse : Loons. Page 276. 



2 Species. 



Stout divers with long bodies, legs set very far back, bob- 

 tailed, long twisting necks, and plumage which is more or 

 less spotted above and plain below. We see them only in 

 the migrations, as they breed in the far north. 



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