The bittern, Britain's most secretive heron, recovered from near-extinction through targeted reedbed restoration, demonstrating how habitat management can reverse dramatic declines in wetland wildlife.
Bitterns are highly sensitive to habitat quality, requiring extensive wet reedbeds maintained through regular cutting and water level management. Birds that find themselves in small or degraded patches face nutritional stress from inadequate fish availability. Hard winters present acute welfare challenges, with birds sometimes needing to travel long distances or to coastal areas to find unfrozen water and food. Climate change is creating more variable freeze-thaw cycles that affect bittern welfare.