|I really needed my wider angle lens - less than a fifth of one flock of Gray-crowned Rosy Finches, Leucosticte tephrocotis|
|Leucosticte tephrocotis tephrocotis - note the gray crown which stops at the eyeline|
|Leucosticte tephrocotis littoralis - aka. "Hepburn's Rosy-Finch", note the completely gray head|
|On reviewing my pictures later in the day, I realized that by pure luck I had both subspecies in the same frame on one shot|
Information for this post taken from Dunn and Alderfer's Field Guide to the Birds of North America, 6th ed. (great subspecies maps!) and Kaufman's Lives of North American Birds.