Due to the diversity of flora and fauna, cork forests provide many niches for the various animals. Forests, shrubs and tree crowns provide safe shelter and nesting possibilities for up to 24 species of reptiles and amphibians, 37 species of mammals and 100 species of birds, some of which are endangered, such as the imperial eagle and the Iberian lynx (it is known that as the lair of the female, lynx is preferred by old hollow cork oak trees, and there are not many cork forests in Europe) .