Types of Moose in Minnesota

Moose and elk are both large cervids found in northern habitats, but they are distinctly different animals. Moose are taller with a body height reaching 10 feet at the shoulder, while elk top out around 5 feet. Moose antlers are palmate (flattened and shovel-like), whereas elk antlers are branching. Moose are dark brown to black and heavily built, while elk are reddish-brown with a more slender frame. Moose have a hanging dewlap under the chin that elk lack. In Minnesota, moose are restricted to the northeastern boreal forest and are far less common than elk. If you see an extremely tall, dark cervid with a drooping snout and humped shoulders in northern Minnesota, it is a moose.

The most obvious difference is antlers. Male moose (bulls) grow enormous palmate antlers, typically six feet across, which they shed each winter and regrow in spring. Female moose (cows) never grow antlers. During the rut in fall, bulls become darker and more muscular, with thickened necks, whereas cows remain relatively lean year-round. Cows also appear more refined in the face, whereas bulls develop a heavier, more robust face. At a distance, a moose with antlers is always a bull; a moose without antlers is a cow or a young bull that has not yet grown antlers.

Moose calves are born in spring and weigh only 25 to 30 pounds at birth. By late summer, they weigh several hundred pounds but are still noticeably smaller than adults and lighter in color, often brownish rather than dark brown or black. Yearlings, which are calves from the previous year, are about three-quarters the size of adults. Young bulls (2 to 3 years old) have smaller antlers than fully mature bulls. A bull's antlers reach full size and shape by age 4 or 5; after that, you cannot reliably estimate age from antlers alone. Adult cows reach full body size by age 3 and maintain that size throughout life unless malnourished. If you observe a very small moose calf nursing from a cow, that is a newborn or very young calf, likely born within the past few weeks.

Moose have two main coats. In winter, they grow a dense undercoat covered by long guard hairs that provide insulation in deep snow and extreme cold. This winter coat is dark brown to nearly black and appears very thick. In spring, moose begin shedding this coat, becoming patchy and rough-looking for several weeks. By summer, they wear a sleeker, shorter coat that is still dark brown but more uniformly smooth. Shedding usually begins in April or May and is nearly complete by June. The summer coat is still quite dark, darker than elk or deer; moose never become notably light or tan. In late summer, they begin growing the winter coat again. This seasonal cycle is tied to photoperiod and temperature, ensuring they are warmly insulated before the first deep snows.

Moose are the largest members of the deer family in North America and among the largest land mammals in the state. Adult bulls typically stand 9.5 to 10.5 feet tall at the shoulder and weigh 900 to 1,500 pounds, though exceptional individuals have been recorded at 1,600 pounds or more. Adult cows are smaller, standing 8 to 9 feet tall and weighing 600 to 900 pounds. A large adult bull moose is heavier than a draft horse and taller at the shoulder than a mounted rider on horseback. This size is an adaptation to life in deep snow forests where their long legs allow them to move through snow that would trap smaller animals. Their tremendous size also protects them from most predators, though wolves and bears will occasionally take young or weakened moose.

The dewlap is a long flap of skin and hair hanging from the underside of a moose's chin and throat. It is unique to moose and is one of the easiest ways to identify one from a distance, even without seeing antlers. The exact function of the dewlap is not fully understood, but scientists believe it plays a role in mating displays during the rut, when bulls produce pheromones that may be dispersed by this hanging flap. The dewlap may also help regulate body temperature by increasing surface area for heat dissipation in summer. Regardless of function, it is a reliable and permanent feature: both bulls and cows have a dewlap from youth through old age, making it useful for field identification.

Moose color is surprisingly consistent. Nearly all moose in Minnesota and the northeastern United States are dark brown to black, especially in winter. Some individuals may appear lighter brown or tan in summer after shedding, but this is simply the exposed lighter undercoat; the hairs themselves are still dark at the base. A very small number of moose are born with lighter coats due to genetic variation, but albino or pure white moose are extraordinarily rare and have never been confirmed in Minnesota. The dark coloration of northeastern moose contrasts with moose in western North America (Alaska, British Columbia), which can be more brown or even grayish in some cases. If you see a moose in Minnesota, assume it is dark brown to black, and any very light-colored cervid is probably an elk or mule deer, not a moose.

Moose are herbivores and eat large quantities of vegetation year-round. In summer, they consume 40 to 60 pounds of browse per day, including aquatic plants, willow leaves, aspen shoots, and water lilies. They are particularly fond of aquatic vegetation and spend much time wading in lakes and wetlands to feed. In winter, they eat woody browse such as balsam fir, willows, and other twigs, consuming 15 to 20 pounds of dry matter per day; since winter browse is dry and less nutritious, the total volume is lower. A moose's stomach is specially adapted to ferment and digest tough plant material that other herbivores cannot efficiently process. This diet ties moose to specific habitats: boreal forests with abundant shrubs and wetlands are ideal, which is why moose in Minnesota are found in the northeastern part of the state.

Moose in the wild typically live 15 to 20 years, though few reach the upper end of that range. Cows often live longer than bulls, particularly because bulls experience stress and injuries during the rut when they fight each other for breeding rights. Young moose have the highest mortality due to predation by wolves and bears, starvation in harsh winters, and accidents. By age 5, a moose that has survived to maturity has a good chance of living another 10 to 15 years if conditions remain favorable. In captivity, moose have lived into their 20s. Severe winters, disease, predation, and vehicle collisions are the primary causes of death in Minnesota moose populations.