Strange Tailed Tyrant horizontal line

Strange Tails

We're delighted to have a strong population of strange-tailed tyrants at the reserve. So much so that we've adopted these beautiful and endangered birds as the symbol of the Trust

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Help Wanted

We need your help to provide a safe, sustainable environment for these irreplaceable and seriously threatened animals. Your donations - however small - are very welcome indeed, and if you can volunteer useful skills then we'd love to hear from you!

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Eumops bonariensis

Eumops bonariensis

Peter's Mastiff Bat

Eumops bonariensis (Peter's Mastiff Bat) is a medium sized bat of up to 20g and is from the family Molossidae.  It is insectivorous and usually roosts in tree holes and has a free tail that extends beyond the uropatagium, as do all members of Molossidae.

It is similar to Eumops patagonicus, which is very common at our reserve, but is bigger, usually redder and has slightly wider ears.  The inner keel of the ear is thicker than patagonicus and extends further back.

We captured this species in the south of our reserve in October 2017 and have also caught it in Buenos Aires province.

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