M. pusillus feeds on nectar as well as fruits and insects. The consumption of nectar requires the bat to come into direct contact with the pollen produced by the plants, allowing for pollination of the plants in its tropical environment and a mutual relationship between the plants and the bats.Owen-Ashley, Noah. "Micropteropus pusillus". American Society of Mammalogists, 1998, p.1. Its pollination is viewed as a positive ecological advantage, but the frugivorous diet has had negative agricultural impact on farms in the surrounding areas of their inhabitance.Owen-Ashley, Noah. "Micropteropus pusillus". American Society of Mammalogists, 1998, p.1. Like nearly all the other bats within the suborder Megachiroptera, M. pusillus does not rely on echolocation to hunt down insects. it was originally hypothesized that M. pusillus primarily fed on nectar and fruits, but there is now images of M. pusillus feeding on moths.
