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

Read More

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!

Make a donation



Reserva Don Luis, Cambyreta, Corrientes, Argentina


                                          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 around 100 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.                                

The summer is currently hot though with some rain which may become more of a factor in Jan/Feb/Mar due to El Nino conditions.

There are many Strange-tailed Tyrants this year and the juveniles are flying. The photo at the top of the page is a male 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                                              


Our main project at the moment is studying the bats of Corrientes and Misiones.  We have a great bat team that can assemble at short notice to  go to a reserve to find a species of bat.  We use nets and Harp traps and have the authority of Parques y Reservas, Corrientes, Recursos Naturales, Corrientes and recently the Ministerio de Ecologio de Misiones. 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 and so far have identified 16 different species from our recordings, some of which are relatively unknown here.The following bats were captured, measured, photographed and recorded before release:  - Molossops temminckii. Eumops patagonicus, Molossus rufusLasiurus ega, Lasiurus blossevilliiEptesicus furinalis, Eptesicus brasiliensis Myotis nigricansMyotis riparius, Desmodus rotundusSturnira lilium, 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 never harm any bat that is captured and it is usually released within 20 minutes.  We would never kill any mamal for research.


                      Platyrrhinus lineatus - White-lined Bat   

 We captured this bat in the south of the reserve in September 2017.  It is frugivorous and weighs aroung 25 grams                                                



                         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.

This is very much a live site, with new content and photographs being added constantly. 

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

Another new bat species for the Bat Team

Another new bat species for the Bat Team

Green-winged Macaw in garden

Green-winged Macaw in garden

Bat team capture 2 new species of bat

Bat team capture 2 new species of bat

New horse for the reserve

New horse for the reserve

Privacy Policy | Site Ownership | Conditions of Use | All content copyright ©2012, Collett Trust, all rights reserved | Web Design by Jem Shaw