Endangered species need to be protected along with all species by stopping the development of private and public lands. There needs to be land for common animals such as bear, deer, and turkeys. With a healthy population of these animals it allows for wolfs, bald eagles, and many other endangered species to gain numbers instead of becoming extinct. This can be accomplished by stopping the development of natural habitats.
One cause of development is suburban sprawl, which builds neighborhoods outside of metropolitan areas. Suburban sprawl destroys farmland, forests, fields, mountains. Forests are cleared to build houses, schools, businesses, and roads. Natural plants and trees are removed to plant green lush lawns that require water and fertilizer which has its own effect on the ecosystem. For example in New England farms are broken up into houses and condos destroying the fields that many birds and small animals needed to survive. By losing the small animals it forms a trickle affect hurting larger animals that depend on them for food.
Mining and deforestation of natural habitats are easier to see the damage to the environment. The land is reaped for its resources and left destroyed, not able to support the wildlife that once was there. Mining doesn't show the effects of the devastation since it is unseen on the surface. Unless it is an open pit mine which destroys the landscape, whole mountains can disappear. Deforestation can be seen much easier, especially when whole mountains are left bare. The land is still there for the wildlife but many animals rely on the trees for food and homes. The virgin forests of New England where destroyed to make ships in the colonial days.
The creation of state and national parks is preserving natural habitats and is a step in the right direction. Private conservation groups are gathering money to buy land and place it under protection. Government and private groups also help farms get put under.