National Geographic : 1939 Oct
Sli aiuiai g cugrapn c ouciLy r-aiLiiig uy vv alcr 11-. vv ur "I'M BOSS HERE. STAY AWAY!" A BUCK MULE DEER (CENTER) DISTRUSTFULLY CONFRONTS ABLACKTAIL (LEFT) A tail all black on the outer side distinguishes the Columbia Blacktail Deer (with female, extremeleft), which occupies the heavily forested strip along the Pacific coast from Alaska to southern California. Larger and with wider-spreading antlers, the more numerous Mule Deer (with three does, right) ranges from central Alberta, the Dakotas, and Texas to the Pacific. From behind, it shows a whitish patch. The white tail has ablack tip.