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the bumblebee bat is one of the world’s smallest mammals. It flies only under the cover of

darkness in the dense forests, where it is but a shadow in the night. 5.1. _____ But exactly

which of them pose the greatest threat to the bats remains unknown.

In fact, there is much about bumblebee bats that has yet to be explained. They live in groups

called colonies, but whether colonies move from one cave to another remains vague.

5.2. _____ This process provides different types of information from which the precise

location, orientation, and type of prey are identified.

The bumblebee bats’ remote cave sites would suggest that the animals are safe from

potentially threatening human activities. 5.3. _____ According to the International Union for

Conservation of Nature, colonies at some cave sites decreased by an estimated 14 percent

between 1998 and 2008. In fact, there are now fewer than 10,000 bumblebee bats left in the

wild, and populations in Thailand are expected to decrease by another 10 percent in the next

decade.

Major threats to the existence of the bumblebee bat stem from human activities, and include,

for example, human intrusion into caves from tourism, habitat destruction from mining and

the burning of forests around cave entrances. 5.4. _____ So, as part of their efforts to save the

tiny creature, conservationists must now work to improve public education about the species

so that people can respond positively to the need for its protection.

adapted from www.britannica.com

A. How long bumblebee bats live is also unknown, but it may be around 5 to 10 years longer

than in case of the lifespans of other closely related bats.

B. Many of these acts suggest just a lack of awareness of the bats’ presence or of the harmful

impact being exerted on them.

C. But since their discovery in the seventies by the Thai mammologist Kitti Thonglongya,

the species has been in decline.

D. Such secretive behaviour would suggest that bumblebee bats are trying to avoid being

hunted by predators.

E. What is known is that bumblebee bats, just like other bats, navigate and detect the target

by emitting high-pitched sounds that bounce off objects and reflect back to their ears.

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