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The Isabelline Serotine Bat

The Isabelline Serotine bat (Eptesicus isabellinus) which weighs in at 20-30g with a wingspan of 35-40cm, was only discovered in Gibraltar in November 2013 and confirmed to be resident shortly thereafter. It is thought that the Isabelline Serotine is a rock crevice dweller which has adapted to urban environments, but little is known of the species locally.


The fur of the Isabelline Serotine bat is pale sandy to gold-blond in colour and its echolocation call peaks at around 28 kHz.