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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Chrotopterus auritus (largest-bat-in-Argentina)

Chrotopterus auritus


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This bat is the largest in Argentina and is second largest in South America.  It is found in dense forest and thus is difficult to capture.  We managed to catch this species low in various single nets and have also had success using a Harp trap. We have never encountered this species in Corrientes but come across it regularly in the north of Misiones.

It is carniverous and its diet includes small birds, amphibians, reptiles and rodents.  It is believed that it also eats fruit on occasion.

It is large and strong with long woolly dark grey fur, almost unicolour with frosted tips.  It has long well seperated ears that resemble mussel shells with pink interiors and a small tragus.  The forearm is usually over 80mm. Weight can be over 100g.