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Glossary
Echolocation: detecting objects by reflected sound. Used for orientation and detecting and locating prey by bats and cetacea (whales and dolphins).
Guano: accumulated droppings found where large colonies of animals such as seals, bats or birds occur; it is rich in plant nutrients, and can be used as a fertiliser for plants.
Subspecies: a population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.