Smithsonian National Museum of Natural History, North American Mammals
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Saccopteryx bilineata

Greater Sac-winged Bat

Order: Chiroptera
Family: Emballonuridae

Image of Saccopteryx bilineata
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Conservation Status: Least Concern.

Female Greater Sac-winged Bats are slightly larger than males, but males maintain harems of 1-9 females, marking them with scent from their wing-sacs and using calls that are within the range of human hearing to stake their claim. Infants are born in the spring, near the start of the rainy season. Before they can fly, the mother hides her baby in a safe place when she leaves it to forage. The baby bats can fly when they are two weeks old but continue to nurse for several months. These bats are common in lowland forests and forest edges.

Range: Head and Body: 47-56 mm; Tail: 16-23 mm

Range: 6-9 g


Temminck, 1838. Tijdschrift soar natuurlijke Geschiedenis en Physiologic. Amsterdam, 5:33.


Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Saccopteryx bilineata