An insectivore, the trefoil horseshoe bat catches its prey by ‘perch hunting’; it hangs from a branch at a height of around three metres above the forest floor, with a clearing beneath, and waits for insects to pass. Once it has detected them using echolocation, emitted from the noseleaf, it drops from the perch and pursues the insect, returning to a hanging position to eat it (2) (3). This species uses long pulses of a constant frequency to detect the flutter of an insect’s wings (4).
The trefoil horseshoe bat gives birth to a single pup which it suckles for several months before the pup is able to fly and catch insects alone. The pup begins life weighing two to five grams; a large proportion of its mother’s weight. By one year of age it is fully grown and ready to have a pup of its own (3).