See first quotation.
1839. The sagacious animal, so soon as a heavy storm sets in, commences forming what is called a Moose-yard, which is a large area, wherein he industriously tramples down the snow while it is falling, so as to have a place to move about in, and browse upon the branches of trees, without the necessity of wandering from place to place, struggling through the deep drifts, exposed to the wolves, who, being of lighter make, hold a carnival upon the deer in crusting-time. No wolf, however, dare enter a moose-yard.C. F. Hoffman, Wild Scenes, i. 95 (Lond.).
1843. It will take so many days to reach the moose-yard.Zoologist, i. 134.