Moose are the largest member of the deer family. A mature bull in the Alaska-Yukon subspecies can clear 1,500 pounds; Shiras moose in the Lower 48 Rockies run smaller, often topping out around 1,000. Bulls grow palmated antlers each year and shed them after the rut. Cows are antlerless, slightly smaller, and run the calves. Moose are solitary outside the rut and cover huge home ranges — a single cow may use 5 to 50 square miles depending on habitat quality.
They are browsers, not grazers. Willow, aspen, birch, and aquatic vegetation make up the bulk of the diet. In summer they wade into ponds and lakes to feed on sodium-rich aquatic plants and to escape biting insects. In winter they shift to woody browse and conifer cover. Moose are strong swimmers and surprisingly fast on land for their size — a charging bull or a cow with a calf will run down a person without effort.
Populations are healthy in Alaska and most of Canada but have declined in parts of the northern Lower 48 since the early 2000s. Wildlife agencies attribute the drop to a tangle of factors — winter ticks, brainworm carried by white-tailed deer, warmer winters that stress the animals, and habitat change. Where they thrive, moose remain a draw-tag hunt almost everywhere because tags are limited and demand is high.