The distinctive booming sound of a male bittern’s call during the spring breeding season is the loudest call of any UK bird and can be heard up to two miles (3.2km) away. However, they are often ...

The site is credited with helping the recovery of the bittern, which had been on the verge of extinction in the 1990s. Tony Whitehead from the RSPB said: "It's probably one of the best places in ...