▁is ▁a ▁mut ual ▁influence ▁that ▁makes ▁it ▁very ▁hard ▁to ▁establish ▁boundaries ▁and ▁some ▁species ▁find ▁their ▁optimal ▁habitat ▁in ▁the ▁intermediate ▁areas . ▁ ▁The ▁end anger ed ▁I ber ian ▁l yn x ▁( L yn x ▁p ard inus ) ▁is ▁a ▁symbol ▁of ▁the ▁I ber ian ▁med iter rane an ▁forest ▁and ▁of ▁the ▁fa una ▁of ▁the ▁I ber ian ▁Pen ins ula ▁altogether . ▁ ▁East ▁Atlantic ▁fly way ▁The ▁I ber ian ▁Pen ins ula ▁is ▁an ▁important ▁stop over ▁on ▁the ▁East ▁Atlantic ▁fly way ▁for ▁birds ▁migr ating ▁from ▁northern ▁Europe ▁to ▁Africa . ▁For ▁example , ▁cur le w ▁sand pip ers ▁rest ▁in ▁the ▁region ▁of ▁ ▁the ▁Bay ▁of ▁C ád iz . ▁ ▁In ▁addition ▁to ▁the ▁birds ▁migr ating ▁through , ▁some ▁seven ▁million ▁w ading ▁birds ▁from ▁the ▁north ▁spend ▁the ▁winter ▁in ▁the ▁est u aries ▁and ▁wet lands ▁of ▁the ▁I ber ian ▁Pen ins ula , ▁mainly ▁at ▁locations ▁on ▁the ▁Atlantic ▁coast . ▁In ▁Gal icia ▁are ▁R ía ▁de ▁Ar ous a ▁( a ▁home ▁of ▁grey ▁p lo ver ), ▁R ia ▁de ▁Ort igue ira , ▁R ia ▁de ▁C orm e ▁and ▁R ia ▁de ▁La xe . ▁In ▁Portugal , ▁the ▁A ve iro ▁L ago on ▁hosts ▁Rec ur vi ro stra ▁av os etta , ▁the ▁common ▁ring ed ▁p lo ver , ▁grey ▁p lo ver ▁and ▁little ▁st int . ▁Rib ate jo