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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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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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Bat Species of Ibera

 

The Esteros del Ibera is a vast, relatively undiscovered wetland and, until recently, little study has been done on its bats species and certainly none in the northern gateway known as Cambyreta.  

Due to the amount of water and thus insects, it is a paradise for insectivorous bats.  Limitations are the amount of available roosts as there are few buildings and the trees are generally shorter than 15m.  It is likely that bats come to hunt in the area from some of the small towns and villages around the wetlands.  We also have an abundance of native fruit which attracts fruit eating species especially in the warmer months.

However we have found several tree roosts and the two houses, cabana and shed at the reserve are teeming with bats - mostly Molossus temminckii or Dwarf Dog-faced Bat and Eumops patagonicus or Patagonian Bonneted Bat.

We are well underway on a new bat call library for Cambyreta and for this we need many bat recordings.  We have already recorded around 16 different species of bat around the houses and now own a Wildlife Acoustics SM4Bat.  This we are placing in remote areas for around a week at a time and analysing the results using Kaleidoscope Pro.  We also record all hand releases of insectivorous bats.

The large lakes in Ibera are ideal for the family Noctilionidae which are known as the fishing Bats.  We captured both Noctilio albiventris and its larger cousin, Noctilio leporinus along the banks of the River Parana in 2018.  They both hunt low over the water, the former hunting insects and the latter small fish.   We have some good recordings of both species on release and the shape of the pulse is very distinctive.We are also involved in capturing bats for ID and biometrics and now have some high end equipment including 2 Harp traps, 1 triple high set up as well as a double high, many singles, hand nets etc.

We now have authorisation to conduct bat research in the province of Corrientes, thanks to Recurses Naturales and also in the Provincial Parks of Corrientes, thanks to Parque y Reservas. We  also now have authorisation to conduct research in Misiones, our neighbouring province to the NE, which has several new species for us to study.  We are also working with Cesar Bracamonte in research into Argentine bats and are in the process of producing a book with photographs of the national bats.

We have put up wooden Kent bat boxes at the reserve and one is constantly occupied by a small Molossidae bat.  We designed a 'Bat Condo' based on the Wisconsin design and that has been up at the reserve since June 2018.  We will advise when we have some occupants.

The following photos are of bats we have caught, measured, identified, photographed, recorded and released over the past three years.  Most of these bats can be found in Corrientes, and the majority in the Ibera Marshes.

 

Molossus temminckii (Dwarf Dog-faced Bat) - insectivorous

This species is common at Reserva Don Luis

Read more here:

Dwarf Dog-faced Bat

 

 

Eumops patagonicus (Dwarf Bonneted Bat) - insectivorous

This species is common at Reserva Don Luis

Read more here

Eumops patagonicus

 

 

Molossus rufus (Black Mastiff Bat) - insectivorous

This species is common at Reserva Don Luis

Read here for more information:

Molossus rufus

 

 

Dasypterus ega (Southern Yellow Bat) - insectivorous

This bat is uncommon at Reserva Don Luis

Read more here

Southern-yellow-bat

 

 

 

Eptesicus furinalis (Argentine Brown Bat) - insectivorous

This bat is common at Reserva Don Luis

For more information:

Argentine Brown Bat

 

 

Myotis nigricans (Black Myotis) - insectivorous

This species is common at Reserva Don Luis

For more information

Black Myotis

 

 

Desmodus rotundus (common Vampire)  - Sangivorous

Common at Reserva Don Luis

More information:

Vampiro

 

 

Lasiurus Cinereus (Hoary Bat) - insectivorous

 This bat was caught in another province but we frequently hear their echolocation calls at the Reserve.

More information:

Hoary Bat

 

 

Lasiurus blossevillii (Western Red Bat) - insectivorous

We have this species at Reserva Don Luis and capture it quite regularly in the cooler months.

More information

 

Lasiurus blossevillii

 

 

Sturnira lilium (LIttle Yellow-shouldered Bat) - frugivorous

This bat is common at Reserva Don Luis in the warmer months

More information:

Phyllostomidae

 

 

Myotis Riparius (Riparian Myotis) - insectivorous

This bat is quite common at Reserva Don Luis

More information:

Riparian-Myotis

 

Eptesicus diminutus (Diminutive Serotine) - insectivorous

This bat was caught in the province of Jujuy

More information:

Diminutive-bat

 

Anoura caudifer (Tailed Tailess bat) - nectivorous

This bat was captured in the province of Jujuy and is seen here happily taking nectar from our syringe.

More information:

Little Long-tongued brown bat

 

Histiotus macrotis (Big-eared Brown Bat) - insectivorous

This bat was caught in the province of Jujuy

More information:

Long-eared Brown Bat

 

Molossus molossus (Velvety Free-tailed Bat) - insectivorous

This bat was caught in the province of Buenos Aires but is also found in Corrientes

More information

Velvety Free-tailed Bat

 

Artibeus lituratus (Great Fruit-eating Bat) - frugivorous

This bat was caught in another province but is found in Corrientes.

More information:

flat-faced-fruit-eating-bat

 

Eptesicus brasiliensis (Brasilian Brown Bat) - insectivorous

This bat was captured at Reserva Don Luis

More information

Eptesicus brasiliensis

 

Eumops bonariensis (Peter's Mastiff Bat) - insectivorous

This bat was captured at Reserva Don Luis in Sept 2017

More information

Molossidae

 

 

Myotis albescens (Silver-tipped Myotis) - insectivorous

This bat is reasonably common in Corrientes but we have not yet encountered it at the reserve.

More information:

Silver-tipped Myotis

 

 

 

Platyrrhinus lineatus (White-lined Bat) - Frugivorous

We encountered an individual at Reserva Don Luis in October 2017

More information

White-lined-bat

 

 

Artibeus fimbriatus (Fringed Fruit-eating Bat) - Frugivorous

This species was encountered in another province but can be found in Corrientes

more information:

Flat-faced-fruit-eating-bat

 

 

Pygoderma biliabiatum (Ipanema Bat) - Frugivorous

This species was found in a nearby province but can be found in Corrientes

more information:

Pygoderma biliabatum

 

 

Tadarida brasiliensis (Brasilian Free-tailed Bat) - insectivorous

This species was found in another province and apparently does not exist in Corrientes

More information

Tadarida brasiliensis

 

 

Carollia perspicillata (Seba's Short-tailed Bat) - Frugiverous

This species was found in a neighbouring province (Misiones) but is very likely in Corrientes.

more information

Seba's Short-tailed Bat

 

 

Glosophaga soricina (Pallas's Long-tongued Bat) - nectivorous

This species was found in a neighbouring province (Misiones) but is likely to be in the gallery forests of Corrientes

more information

Seba's Short-tailed Bat

 

 

Noctilio albiventris (Lesser Bulldog Bat) insectivorous/pescivorous

This species was captured in Corrientes.

Fishing bat

 

 

Noctilio leporinus (Greater Bulldog Bat) - pescivorous

This species was captured in Corrientes.

Fishing bat2

 

 

Myotis levis (Yellowish Myotis) - insectivorous.  

This species was captured in Buenos Aires and probably is not present in Corrientes

Myotis levies

 

We wish to thank Pico Frago from Parques y Reservas, Corrientes, for authorisation to conduct this research into our local bats.  We also wish to thank Recurses Naturales for permission to widen our research throughout the province of Corrientes.  We now have permission to conduct research in the province of Misiones and are grateful to the Ministerio de Ecologia in Posadas.

 

 

 

 

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