pt ile ▁species ▁live ▁in ▁the ▁area . ▁In ▁ 2 0 0 6 , ▁the ▁wall ▁l izard ▁was ▁first ▁detected ▁at ▁the ▁mouth ▁of ▁the ▁Rh ine . ▁The ▁wall ▁l izard ▁is ▁a ▁heat - lo ving ▁l izard ▁species ▁with ▁a ▁distribution ▁focus ▁in ▁the ▁Mediter rane an . ▁They ▁likely ▁to ▁have ▁settled ▁in ▁Vor ar l berg ▁after ▁having ▁been ▁exposed . ▁ ▁Although ▁primarily ▁known ▁for ▁its ▁bird ▁life , ▁the ▁Rh ine ▁delta ▁is ▁also ▁an ▁important ▁habitat ▁for ▁m amm als , ▁especially ▁for ▁small ▁m amm als . ▁The ▁crown ed ▁sh rew ▁and ▁the ▁greater ▁white - to oth ed ▁sh rew , ▁among ▁others , ▁are ▁found ▁in ▁the ▁area ▁and ▁are ▁restricted ▁to ▁the ▁Al pine ▁Rh ine ▁valley ▁in ▁Austria . ▁So ▁far , ▁four ▁bat ▁species ▁have ▁been ▁reli ably ▁detected . ▁The ▁be aver ▁was ▁er adic ated ▁in ▁Vor ar l berg ▁in ▁ 1 6 8 6 ▁due ▁to ▁its ▁fur ▁and ▁usage ▁as ▁a ▁fast ing ▁me al . ▁In ▁ 2 0 0 6 , ▁be aver ▁traces ▁were ▁discovered ▁at ▁the ▁Old ▁Rh ine ▁for ▁the ▁first ▁time ▁in ▁over ▁ 3 0 0 ▁years . ▁In ▁the ▁meant ime , ▁the ▁be aver ▁has ▁spread ▁further ▁and ▁has ▁already ▁populated ▁several ▁bodies ▁of ▁water ▁in ▁the ▁Rh ine ▁valley . ▁ ▁Flora ▁ ▁Although ▁the ▁land ▁area ▁compr ises ▁only ▁about ▁a ▁third ▁of ▁the ▁over ▁ 2 0 0 0