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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Reserva Don Luis, Cambyreta, Corrientes, Argentina

                               Alectrurus risora

                                          Respect Other Species

Thank you for visiting our website. We're a small trust dedicated to preserving endangered species and defending the habitats that are essential to their survival.

Our wildlife reserve is made up of 1,600 hectares (4,000 acres)  of grassland/wetland in north-east Argentina. We purchased this former cattle ranch in 2010 and have since worked constantly to restore its ecological balance and provide a safe, sustainable habitat for its magnificent flora and fauna.  We are primarily a research station and welcome visiting naturalists, biologists, ornithologists, Bat workers, experienced bird ringers and keen amateurs interested in conservation. We are also looking for volunteers.  See our page on Volunteering

Our Trust is also involved with the Jersey Bat Group in the island of Jersey, UK, where we have put up 104 bat boxes in the island's woodlands in an effort to learn more about our local bats.

Our Transport at Reserva Don Luis                            

                               Maurio on horseback


We have several photo galleries that we hope you will look at including 'Birds of Ibera',  Mammals of Ibera,  Bat ID'Reptiles of Ibera', 'Endangered Species', 'Fauna of Iguazu' amongst others.  

Since April 2015 we have had an example of Crax fasciolata (Bare-faced Curassow) at our reserve, the first in Corrientes for decades.  When we have finally received the respective authorisations, we hope to start a breeding program with this species in order to create a viable population before releasing.  Read more here for information on this Cracid which is highly endangered in Argentina.


After the tremendous flooding from April to June this year, we are now in a normal period and the reserve looks really healthy with enough water but not too much. 


The Strange-tailed Tyrants have once again had a successful breeding season.  We are conducting surveys of this species in the south of Don Luis where there are a lot of birds.  We are seeing juveniles flying which is encouraging. The photo at the top of the page is a female Strange-tailed Tyrant.


                                Strange-tailed Tyrant, Alectrurus risora, Yetepa de Collar

                                 Alectrurus risora


We have an army of Capybaras in our garden and sometimes you can see 50 plus during the nighttime.  Even during the day there are usually several around.

                                   Hydrochaeris hydrochaeris, Capybara, Carpincho                                              


Much of our current work revolves around the study of our local bats (authorisation of Parque & Reservas) and we now have authorisation to conduct studies in the rest of the Province thanks to Recurses Naturales.  Currently we know of 14 definite bat species at the reserve which we have processed through capture and release.    For more information please look at our page on Bats of Ibera. There is no official bat call library in Argentina so we are creating our own.    We have identified 16 different species from our recordings, some of which are relatively unknown here.  We have also spent time mist netting/harp trapping for bats during the past three years which has resulted in fourteen different species - Molossops temminckii. Eumops patagonicus, Molossus rufusLasiurus ega, Lasiurus blossevilliiEptesicus furinalis, Eptesicus brasiliensis Myotis nigricansMyotis riparius, Desmodus rotundusSturnira lilium, Myotis simus ,Platyrrhinus lineatus and Eumops bonariensis.  Finally we feel we are making some progress toward identifying our bat species in a country in which they generally persecute these specialised mammals. See the bats that we have identified on our Mammals of Ibera page.   

We are also involved in batwork in the island of Jersey, Channel Islands with the Jersey Bat Group.  We are studying the habits of our woodland bat species and collecting data using bat boxes, static recorders and netting methods.

                      Platyrrhinus lineatus - White-lined Bat                                                        



                         Lasiurus cinereus - Hoary Bat

Although we have not yet caught this beautiful bat at the reserve, (this one was caught in another province) we frequently hear it on our detectors.

Hoary Bat



This is the second largest wetland in South America and is renowned for its biodiversity, in particular amongst the bird species.  We have several endangered species at our reserve including the Maned Wolf, Marsh Deer, Neotropical Otter, Strange-tailed Tyrant, Marsh Seedeater, Greater Rhea and Ochre-breasted Pipit.  We are constantly adding new papers to our page Scientific Reports.

We have some exciting plans for reintroductions, initially of the Bare-faced Curassow where we have made a significant step in obtaining a male for the reserve.

This is very much a live site, with new content and photographs being added constantly.  We are spending time at the reserve for the majority of the Argentine summer, hoping to advance our projects.

We hope you'll enjoy your visit and that we'll be seeing you again.  Any queries please contact us at

Miranda Collett

                                            Marsh Deer



More about the Trust

Latest News

River Otter seen at Don Luis

River Otter seen at Don Luis

Another baby fawn at Reserva

Another baby fawn at Reserva

Southern Yellow Bat

Southern Yellow Bat

Arandu getting larger

Arandu getting larger

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