6. The are some outstanding birds to be seen in spring and summer, such as the tit (Parus caeruleus), the canary bird (Serinus canarius) or the Spectacled Warbler (Sylvia conspicillata). On the other hand, there are some which live in these ecosystems throughout the year, such as the roadman (Anthus berthelotii) or alcaudón (Lanius meridionalis).
8. The main changes that have suffered these ecosystems come from grazing. The Barbary sheep and mouflon, introduced some decades ago, have caused significant damage.