How do caribou get their food and how far do caribou go when they eat?

Caribou primarily forage on a diet of lichens, grasses, and shrubs, which they find in their Arctic and sub-Arctic habitats. During the summer months, they migrate long distances, sometimes exceeding 1,500 miles, to access abundant food sources and ideal calving grounds. Their migratory patterns are influenced by seasonal changes and the availability of food, allowing them to efficiently exploit different habitats throughout the year.