HERMIT THRUSH — ALDRICH 



13 



In previous sections of this paper it has been noted that color and 

 size were associated during the breeding season with particular geo- 

 graphical areas and, to a large extent, with particular sets of ecological 

 conditions. The differences in certain groupings of characters appear 

 to be sufficiently distinct morphologically, ecologically, and geograph- 

 ically to permit recognition of the populations possessing them as 

 different subspecies (fig. 4). 





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i 



200 200 400 600 800 1000 



1 



! SMALL, DARK, (7\^^S 



RAW UMBER TO *A jj p\_, J . 

 PROUT'S BROWN JjyB& © 



E01UM SIZED, SMALL-BILLED, PALE, 



9 MEDIUM SIZED, LONG- LEGGED, MEDIUM SHADE, 1 

 SACCARDO'S UMBER TO CINNAMON BROWN 



10 MEDIUM SIZED, LONG-LEGGED .DARK, 

 BROWNISH OLIVETO PROUT'S BROWN 



LOCALITIES OF SPECIMENS IDENTIFIED 



BY AUTHOR. 



LOCALITIES OF RECORDS IN LITERATURE 



SELECTED TO SHOW DISTRIBUTION IN 



AREA FROM WHICH SPECIMENS WERE 



NOT SEEN 



APPROXIMATE LIMITS OF DISTRIBUTION 



OF SPECIES 



APPROXIMATE LIMITS OF CHARACTER 



COMBINATIONS 



(COLOR TERMINOLOGY IS FROM RIDGWAY- 1912 ) 



Figure 4. — Breeding distribution and morphological variation in subspecies of Catharu; 

 guttatus (l=guttatus; 2 = nanus; 3=vaccinius; 4=slevini; 5=sequoiensis; 6=audubonis 

 7=oromelus; 8 — euborius; 9=faxoni; 10 — crymophilus). 



All of these populations have previously supplied names based on 

 adequate descriptions. These are characterized under the oldest 

 names available for them in the following descriptions. Unless other- 

 wise specified, color designations are for the back, wings, and crown 

 (not upper tail coverts and tail). Capitalized color terms are those 

 of Ridgway (1912). Numbers preceding the name refer to the position 

 of the populations' distribution on the map (fig. 4). Measurements 

 (extremes and means) are in millimeters. They include the wing 



