The Somerset Wildlife Trust is asking people to listen to hear the boom of a bittern as it tries to track them for a study. The distinctive boom of the male can be heard up to two miles (3.2km) away.
One of the UK's rarest birds, the bittern, is making a new comeback from extinction, after its best year on record led to the numbers of breeding males topping 100 for the first time. Here is a ...
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