Food is scarcest and energy demands are greatest. Bark, buds and twigs are also eaten in winter. Good shelter reduces the need for food. Some animals, such as turkey, survive mostly on bound water. Generally, the more water in an area, the greater the quantity and diversity of wildlife.
Wetlands are valuable for wildlife.
Area and arrangement. Forest animals prefer not to cross wide open spaces. Therefore narrow strips of forest can be important as travel corridors. Most species prefer to live at the edge between two types of vegetation. Edge provides ready access to both food and cover.