Britain's Elusive Bittern Makes a Comeback

The serene British wetlands are alive with the distinctive, resonant boom of the Eurasian bittern, a sound that can travel up to 5 km. This shy bird, scientifically known as Botaurus stellaris, is a member of the heron family and is notoriously difficult to spot due to its exceptional camouflage, often blending into reedbeds by pointing its bill skyward.

During the spring breeding season, the male Eurasian bittern's powerful call echoes across the marshes, serving to attract females and ward off rivals. This sound, compared to blowing across an empty glass bottle, is among the loudest bird calls in the UK. Conservationists use these booming calls, counted annually in May, to monitor the species' population.

The Eurasian bittern faced near extinction in Britain by the late 19th century due to hunting and habitat loss. Despite a return, populations plummeted again by the 1990s, with only 11 booming males recorded in 1997. However, dedicated wetland recovery and reedbed protection efforts have yielded impressive results.

As of 2024, the number of booming male bitterns reached 283, marking the highest count since 1990 and a 20% increase from the previous year. This 'spectacular comeback' signifies a positive shift for the species. While still rare and elusive, bitterns can now be found in extensive reed beds across areas like East Anglia and Somerset, their booming call a rewarding sign of their resurgence.