Most agencies, however, have a hard time finding the funding and authority to make sure there is enough early successional habitat (what hunters often refer to as “cover”). Examples of this include overgrown pastures, thickets, and saplings. If these habitats are not mowed, burned, cut, or disturbed in some fashion, they eventually become forest. If a forest is never thinned, flooded, impacted by insects, or burned, it grows into a mature canopy that prevents sunlight from reaching the forest floor. When this happens a lot of wildlife and plant species disappear.