The females are about a third lighter.
Besides these differences in size, color, hair, etc., as noted above, we may observe that the domestic sheep, in a general way, is expressionless, like a dull bundle of something only half alive, while the wild is as elegant and graceful as a deer, every movement manifesting admirable strength and character.

The tame is timid; the wild is bold.

The tame is always more or less ruffled and dirty; while the wild is as smooth and clean as the flowers of his mountain pastures.
The earliest mention that I have been able to find of the wild sheep in America is by Father Picolo, a Catholic missionary at Monterey, in the year 1797, who, after describing it, oddly enough, as "a kind of deer with a sheep-like head, and about as large as a calf one or two years old," naturally hurries on to remark: "I have eaten of these beasts; their flesh is very tender and delicious." Mackenzie, in his northern travels, heard the species spoken of by the Indians as "white buffaloes." And Lewis and Clark tell us that, in a time of great scarcity on the head waters of the Missouri, they saw plenty of wild sheep, but they were "too shy to be shot." A few of the more energetic of the Pah Ute Indians hunt the wild sheep every season among the more accessible sections of the High Sierra, in the neighborhood of passes, where, from having been pursued, they have become extremely wary; but in the rugged wilderness of peaks and canons, where the foaming tributaries of the San Joaquin and King's rivers take their rise, they fear no hunter save the wolf, and are more guileless and approachable than their tame kindred.
While engaged in the work of exploring high regions where they delight to roam I have been greatly interested in studying their habits.

In the months of November and December, and probably during a considerable portion of midwinter, they all flock together, male and female, old and young.

I once found a complete band of this kind numbering upward of fifty, which, on being alarmed, went bounding away across a jagged lava-bed at admirable speed, led by a majestic old ram, with the lambs safe in the middle of the flock.
In spring and summer, the full-grown rams form separate bands of from three to twenty, and are usually found feeding along the edges of glacier meadows, or resting among the castle-like crags of the high summits; and whether quietly feeding, or scaling the wild cliffs, their noble forms and the power and beauty of their movements never fail to strike the beholder with lively admiration.
Their resting-places seem to be chosen with reference to sunshine and a wide outlook, and most of all to safety.