Indian flying fox flying foxes engage in oral sex, with males performing cunnilingus on females. The duration of oral sex is positively associated with the duration of copulation, suggesting that its purpose is to make the female more receptive to copulation and to increase the male's chances of fertilizing an ovum. Like other fruit bats, the Indian flying fox may be a natural reservoir for diseases including certain henipaviruses and flaviviruses. These can prove fatal to humans and domestic animals. Indian flying foxes in India and Bangladesh have tested positive for Nipah virus, a type of henipavirus. Due to human encroachment into their
Vanikoro flying fox Confirmed food sources of the Vanikoro flying fox include coconut flowers, coconut nectar, and fan palm flowers. Originally the IUCN Red List listed the Vanikoro flying fox as "Vulnerable" in 1996, but as of 2008 its status has been updated to "Critically Endangered (Possibly Extinct)". However, as of 2014, large numbers of the species were recorded by a Heritage Expeditions survey conducted on threatened birds and flying foxes in the Santa Cruz islands and Solomon Islands. Due to its imperiled status, it is identified by the Alliance for Zero Extinction as a species in danger of imminent extinction. In 2013,