白尾鹿
White-tailed deer populations are very large across the eastern US, making it both a dominant and defining species. The white-tailed deer competes with other herbivores for limited food resources directly affecting the ecosystem, as well as indirectly affecting the area by altering habitats for small vertebrates and mammals. According to the Virginia Journal of Science’s research on white-tailed deer, deer are grazers primarily, feeding on the leaves of shrubs and such; however in the winter months they are found browsing the woody stems of shrubs and saplings. White-tailed deer have four stomachs, each with their own specific digestive action. The complex breaking down of food allows the deer to each woody plants and other things that most animals cannot digest. Areas with high deer populations, will see a dramatic shift in forest cover because small saplings and shrubs growth will be retarded on hindered due to their browsing habits. White tailed deer are polygamous; in the northern parts of the region they will mate in November and for more southern dwelling populations mating occurs in January. A female will give birth to one to three fawns, after a 6-month gestation period. After about 3 months, the young will leave their parents. White tailed deer typically live about three years but can live up to 15 years. White-tailed deer exemplify a "k-selection" species. They have long gestation periods, can reproduce more than once in a lifetime and are only a few offspring are produced at once.