24 Bh'ds of Oregon and Washington 



Land-birds, and the list covers nearly all of this 

 class that are, in most localities, common. 



Now of these one hmidred and forty and 

 more species, or sub-species, of birds, nearly one 

 hundred belong to the region of country west of 

 the Mississippi Valley; of the latter, forty-five 

 are altogether confined to the Pacific Slope and 

 a few of the forty-five to the North Pacific 

 Slope ; leaving about fifty identical in kind with 

 eastern varieties. The lists thus indicated are 

 given at the end of this chapter under the head- 

 ings "Pacific" — meaning species or sub-species 

 confined to the Pacific Slope; ''Western" — 

 meaning species or sub-species found upon the 

 Pacific coast, but extending further east, some 

 of them into the Mississippi Valley ; and '' Iden- 

 tical " — meaning, of course, the same on both 

 sides of the continent. 



One species at least, the Western Meadow- 

 lark, is found at a little distance beyond the 

 Mississippi River but it makes no nearer ap- 

 proach to the Atlantic side ; another, Traill's 

 P'lycatcher, is seen as far east as Ohio, but does 

 not cross the Alleghany Mountains. 



In the back of the book will be found, for the 



