The Horned Lark is one example of this problem. The type subspecies 

 Oiocoris alpestris alpestris has generally been known as the Horned Lark 

 regardless of the fact that any one of the fourteen or more other geogra- 

 phical races have an equal claim to the name and that it is the only one 

 for the species as a whole. The obvious course is to call the typical sub- 

 species, Otocoris alpestris alpestris (only typical in the sense of being des- 

 cribed first and not on account of any taxonomic superiority to other 

 forms), Eastern Horned Lark and to apply the name Horned Lark to the 

 whole collection of co-ordinate subspecies, making it synonymous with the 

 scientific binomial Otocoris alpestris. 



The Migrant Shrike offered other difficulties. The logical proceeding 

 would be to call the whole species Louisiana Shrike, from its scientific name 

 ludovicianus. This would, however, introduce an unfamiliar name recog- 

 nizable by only a few. The species has, therefore, been called here the 

 Loggerhead Shrike and the form of eastern Canada the Migrant Logger- 

 head, on the assumption that a geographical term such as southern could 

 be appHed to the type race to which Loggerhead has hitherto been restricted. 



It would be too much to expect that the result attained will satisfy 

 everyone; the writer hopes, however, that it will be accepted until the 

 American Ornithologists' Union committee takes the matter up and 

 makes authoritative decisions. 



In the following pages the number and vernacular name, with as 

 little modification as possible, have been taken from the American' Ornith- 

 ologists' Union check-list and appear first as a specific heading in heavy 

 type. Following, in smaller type, are the more common local names by 

 which the species has been or is known in various localities. The French 

 equivalent is then given, preceded by the contraction, "Fr.". These 

 formal French names have been adapted from "Dionne's Les Oiseaux de 

 la Province de Quebec" and are followed when possible by vernacular 

 terms in current use in French-speaking sections. Many of them were 

 furnished by Dr. C. W. Townsend who has had considerable ornithological 

 experience in the eastern provinces. Where French terms are missing, 

 there is as far as the writer is aware no accepted French name. 



The Latin specific name follows in italics and is always binomial. 



Preceded by the initial "L" the length of the species is next given in 

 inches and decimals of an inch. The length of a bird is determined by 

 measuring it, in the flesh, in a straight line from the tip of the bill to the 

 end of the longest tail feather, the bird being stretched only enough to 

 straighten the neck curves. The measurements given are those of the 

 average adult male and indicate the comparative size of the species under 

 consideration. They are not for specific identification, as in most species 

 there is more or less individual and sexual variation. 



Only an outHne description of species is given and where there are 

 illustrations the description is omitted and the reader is referred to the 

 illustration instead. 



Under "Distinctions," an attempt is made to bring out the salient 

 points by which the species, when in hand, may be separated from other 

 similar forms, and the work of other authorities has been freely drawn upon 

 to supplement the writer's observations. Many of the distinctive points 

 are naturally only superficial, but all are, as far as possible, reliable. 



Under the heading "Field Marks," the features by which the species 

 may be recognized in life are mentioned. In these the writer has been 



