Biologists know that some big game species such as the grizzly bear, the caribou, and the antelope are few in number in Washington. Preservation efforts—protecting their habitats and eliminating hunting of these species—will help as biologists try to rebuild these populations. Other species, such as robins, eagles, and owls, are also protected from hunting and benefit from preservation. When biologists use preservation as a wildlife management tool, they want to protect animals and their habitats for future generations.