This is the smallest elk of the three. A mature Tulle Bull elk will weigh about 550 pounds, while a female will weigh about 350 pounds. A newborn calf weighs about 8 pounds at birth.
This is the largest of the elk species. A mature bull will weigh about a thousand pounds or more, while a cow will weigh about 600 pounds. A calf weighs about 18 pounds at birth.
This is the most numerous elk in America, and most standard elk weights tend to be taken from this species. A mature bull will weigh about 850 pounds, while a cow will weigh about 500 pounds. A calf weighs about 16 pounds at birth.
Of course, there are exceptions. One extraordinary Rocky Mountain Elk was weighed at 1,100 pounds. However, such an animal is a freak of nature. Most representative specimens in each subspecies will weigh within the parameters noted above.