Roy,
Below is a snippet from "How To Hunt Coues Deer" -- the book I wrote along with Duwane Adams. -TONY
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Although some call them ?coos? deer, and others more properly call them ?cows? deer, the litte deer, taxonomically known as Odocoileus virginianus couesi, ranks as one of North America?s most elusive and savy game animals. Just ask any hunter who has been outsmarted by a wily ol? buck.
The Coues deer inherited the couesi part of its Latin name from Lieutenant Elliot Coues, a Union Army quartermaster and naturalist who spent time in Arizona during the 1860s and supposedly collected and studied the Coues deer. Some accounts of his actual travels in Arizona seem to suggest he never even saw one of the deer that bears his name, however. According to historical records, another naturalist of the time, Edgar A. Mearns, assigned Coues? name to the diminutive deer?s taxonomical listing.