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Bird - Lore 



made no recent ruling in this field, and we consequently present Dr. Oberholser's 

 views on the preceding pages as those of an expert who has devoted much 

 attention to this group. 



During the breeding season, when only one subspecies will be found at a 

 given place, the various races may be known by the regions which at that 

 time they occupy. But while migrating, or in the winter, when several races 

 may be associated, positive field identification is not to be expected. 



The Bicolor Blackbird {Agelaius guhernator calif ornicus; Fig. 4) resembles 

 the Red-wing but the male has the red shoulder-patch bordered with black 

 instead of buff, and the female is blacker with rusty margins. 



The Tricolor Blackbird {Agelaius tricolor; Figs. 5, 6) has the shoulder- 

 patch of the male bordered with white instead of buff or black, and the female 

 is less streaked than in the Red-wing. 



