Animalia > Chordata > Mammalia > Chiroptera > Emballonuroidea > Emballonuridae > Coleura > Coleura seychellensis

Coleura seychellensis (Seychelles sheath-tailed bat)

Wikipedia Abstract

The Seychelles sheath-tailed bat (Coleura seychellensis) is a sac-winged bat. It occurs in the central granitic islands of the Seychelles. It is an insectivorous bat, feeding primarily in forest clearings at night and roosting in communal roosts by day. Although previously abundant across the island group, it now only occurs on three islands. Its numbers have been declining to such an extent that the International Union for Conservation of Nature has listed it as being "critically endangered". It seems that increase in the cultivation of coconut palms in plantations, and the introduction of alien plant species, has reduced the availability of insect food.
View Wikipedia Record: Coleura seychellensis


Endangered Species

Status: Critically Endangered
View IUCN Record: Coleura seychellensis

EDGE Analysis

This bat belongs to an ancient family of sheath-tailed bats, so-called because of the nature of the membrane which stretches between the hind legs. By adjusting the hind legs in flight, this membrane can be lengthened or shortened as it slips over the tail, increasing manoeuvrability in flight. Previously common on the Seychelles Islands, this bat has undergone a severe population decline over the past 30 years. Less than one hundred bats are believed to survive today, in just two locations. Conservation programmes require support in order to ensure that this species has a future.
Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 15.91
EDGE Score: 5.6
View EDGE Record: Coleura seychellensis


Adult Weight [1]  10.6 grams
Diet [2]  Carnivore (Invertebrates)
Diet - Invertibrates [2]  100 %
Forages - Aerial [2]  100 %
Nocturnal [2]  Yes
Snout to Vent Length [3]  2.362 inches (6 cm)
Top 100 Endangered [4]  Yes


Name Countries Ecozone Biome Species Report Climate Land
Granitic Seychelles forests Seychelles Afrotropic Tropical and Subtropical Moist Broadleaf Forests    

Biodiversity Hotspots

Name Location Endemic Species Website
Madagascar and the Indian Ocean Islands Comoros, Madagascar, Mauritius, Seychelles Yes

Range Map


External References



Attributes / relations provided by
1Felisa A. Smith, S. Kathleen Lyons, S. K. Morgan Ernest, Kate E. Jones, Dawn M. Kaufman, Tamar Dayan, Pablo A. Marquet, James H. Brown, and John P. Haskell. 2003. Body mass of late Quaternary mammals. Ecology 84:3403
2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
3Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
4Baillie, J.E.M. & Butcher, E. R. (2012) Priceless or Worthless? The world’s most threatened species. Zoological Society of London, United Kingdom.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License