M. pusillus females are sexually receptive year round, however, mating and lactation have been most frequently been observed during the periods when fruit is most accessible. This is during the two rainy seasons during the year. The rainy season during the spring is from March to May and in the fall from September to November.Owen-Ashley, Noah. "Micropteropus pusillus". American Society of Mammalogists, 1998, p.1. The selection of this time frame for gestation and lactation allows the female the best opportunity for satisfying her nutritional needs during a time of increased metabolic rate. Morphological differences in the males allow them to emit high pitched sounds to attract a mate.Owen-Ashley, Noah. "Micropteropus pusillus". American Society of Mammalogists, 1998, p.1.
