Amazing Little Forest Bats
Little Forest Bats flutter beneath tree canopies at night in search of flying insects. They are one of Australia’s smallest mammals, with a body no larger than a human thumb, and are found in the forests of south-eastern Australia.
By day, Little Forest Bats roost in colonies of 20–50 animals in tree hollows or roof cavities. They hang upside down from their back legs with their wings folded along their bodies. Their wings are formed from a membrane of skin that stretches over their greatly elongated arm and hand bones.
Bats are placental mammals. Other Australian native placental mammals are rodents, seals, dingos, dolphins and whales; all other native mammals are marsupials. Female Little Forest Bats give birth to a single young in spring or early summer and feed them with milk for 6–7 weeks. Until they can fly, the young remain in the roost.
Microbats emit rapid pulses of ultrasound that are usually too high-pitched for human ears. They can detect prey by the way the sound bounces back to them. Little Forest Bats eat small insects while flying, but may catch larger prey in their wing membranes to be eaten while roosting.
In winter, Little Forest Bats become inactive to save energy. Their temperature can drop to near-freezing and their heart rate slows down.