Geoffroy’s horseshoe bat (Rhinolophus clivosus)

A Geoffroy’s horseshoe bat
observed in a vacant house (left). And a specimen from Tanzania on the
right (Photo taken by B. Stanley).4
Identification pointers
The distinguishing characteristics of this species of the genus
are subtle, and there can be no accurate identification of this species
without an expert opinion. But the Geoffroy’s horseshoe bat is the most
widely encountered species of the genus in South Africa. They are
greyish or reddish brown with paler fur below and dark wing membranes;
ears are pointy but broad at the base. All horseshoe bats have pointy,
conspicuous structures protruding from their noses and complex nose
leaf anatomy. These structures facilitate the generation of their
constant frequency echolocation call.
Forearm length: 49-57 mm and mass ranges between 12-25
grams.10
Roosting habits
Cavities such as disused buildings5, caves, mine
addits, cellars and similar places with a stable microclimate. In caves
colonies can be enormous, reaching up to 10 000 in the Western and
Eastern Cape, where they invaluably contribute to insect control. The
verandas of houses and trees may be used as night roosts to feed on
captured prey, and are also marked by the scattered remains of insect
wings.8, 10
Breeding
A single young is born once a year in December, or during the
warmest summer months.10
Food
Distances of 10km from the roost may be covered in a foraging
night, where moths and beetles are common
prey8. Gleaning is possible and they are slow-flying,
clutter feeders, which means that they prefer thickets rather than
grasslands as foraging habitat.10



