They will remain together for several days. Fawns are born in late May or early June. A doe will usually produce a single fawn the first year she gives birth and then produce twins in following years. They young are able to walk within a few minutes after being born. They have white camouflage spots and are further protected by having little or no scent.
Fawns usually stay with the doe for the first full year.
During the summer, the deer feed on tender branch and leaf tips of trees, shrubs, and some grasses. They are nocturnal feeders and are most often seen in the early morning and late evening. Mule deer are found in the West from Canada to Mexico and in a variety of habitats from the high mountains to the plains and deserts. In the park, they are most often sighted in the Headquarters area where good browse is available.