Madagascan rousette of the genus "Rousettus", these bats reside within cave roosts, suggesting the use of echolocation. These bats are a part of a larger group of fruit bats within "Rousettus" which consists of 10 different species. The Madagascan rousette primarily resides on western Indian Ocean islands. The habitat of the Madagascan rousette is generally found to be associated with forests. They will roost well beyond the time of twilight. Many roosts have been found within caves however some bats have been found without a known cave roost, suggesting that the Madagascan rousette may sometimes roost within tree holes or other alternatives.
Human echolocation since at least the 1950s. In earlier times, human echolocation was sometimes described as "facial vision" or "obstacle sense," as it was believed that the proximity of nearby objects caused pressure changes on the skin. Only in the 1940s did a series of experiments performed in the Cornell Psychological Laboratory show that sound and hearing, rather than pressure changes on the skin, were the mechanisms driving this ability. The field of human and animal echolocation was surveyed in book form as early as 1959. See also White, et al. (1970) Many blind individuals passively use natural environmental echoes to sense