ANALYTICAL KEY 



To find any land-bird — except ''a bird of prey," Nos. 

 275-302, or a permanent *' game-bird," Nos. 259-263 — first 

 determine to which of the five following (color) Lists it be- 

 longs. At different seasons of the year consult the four 

 (season) Groups contained in each List, /« the following 

 order, and the species sought will generally be found in the 

 first or second group of each series. (The dates and series 

 of Groups are approximately correct for the whole territory. 

 A very few species of summer and migrant birds arrive in 

 March, especially in southern part of territory.) 



April I to June i, 

 Summer, Migrant, Permanent, Winter. 



June I to September i. 

 Summer, Permanent, Migrant, Winter. 



September i to November i, 

 Summer, Migrant, Permanent, Winter. 



November i to April i, 

 Permanent, Winter, Summer, Migrant. 



The list of occasional " species (occurring out of proper 

 season), found at the end of each Group, should be reserved 

 until the Group is reached to which they properly belong. 

 Thus, April i — June i, the Summer, Migrant, and Per- 

 manent Groups should be examined before the '' list of 

 winter birds occasionally found in summer," which is at the 

 end of Summer Group. 



The groups are indicated by the first letter of each 

 name : (S) Summer, (M) Migrant, (W) Winter, (P) Perma- 

 nent. 



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