Strange Tails

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

The growing diversity of the animals of Reserva Don Luis is a fresh source of delight every time we return.  We don't play favourites, but it's impossible not to engage more with some of our more conspicuous guests.  One of these is the strange-tailed tyrant.  The male is stoic in his tolerance of one of nature's strangest - and it would seem least practical - adaptations.  He's willing to suffer to be beautiful, and somehow manages to fly with tail feathers that were surely designed for a bird three times his size.

We love his perseverance; his resolution to succeed against challenge, and his ability to prove that anything is possible.  He's appearing in growing numbers on the Reserva Do Luis, and his success has become an allegory for, and a symbol of, our own.

When we started the process of updating and redesigning our website, we wanted to adopt an image that symbolised our aims and our challenges.  This brave little flycatcher, with his indomitable character, was the perfect choice.

The logo is a stylised profile of a male tyrant, silhouetted against the sunrise.  We coloured the sun the blue of the Argentinian flag in honour of this country's beauty, its climate and the breathtaking span of magnificent animals that it nurtures.

More about strange-tailed tyrants>>

Platyrrhinus lineatus

Bat Research

Our bat team is conducting bat research both in the Ibera Marshes and in other provinces. We are especially concentrating on Misiones at the moment where we find the largest bat in Argentina, Chrotopterus auriitus and Myotis ruber, two species that we are researching.

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Myotis ruber (Red Myotis)

Myotis ruber

Red Myotis

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We finally came across this Myotis bat during a bat research trip to San Pedro, Misiones.

This is a large bat for the Argentine genus that weighed 10 grams and had a forearm length of 41.3mm, which is large even for this species. All of the other distinguishing features were typical Myotis such as the semi-furred uropatagium, dentition, tragus.

The main distinguishing feature is the brick red coloured fur, unicolour on the dorsal side and bicoloured on the ventral side.

It can be confused with Myotis simus, which also has bright coloured more yellowish fur, but in that species the wing membrane is attached to the ankle whereas in ruber it is attached to the toes.

On release we recorded its echolocation and it came out at around 58kHz, which is similar to Myotis riparius.

We have since come across several examples of this species in Misiones, including in the Provincial Park of Urugua-i.