Noctule bats are the largest UK bat species, roosting in tree cavities and hunting high above woodland, facing welfare challenges from roost loss and insect prey decline.
Noctule bat welfare depends on retention of veteran and mature trees with natural cavities. Felling of mature trees directly kills roosting individuals and destroys maternity colonies accumulated over decades. Night flying insects have declined 60% across Europe, reducing available prey and causing increased foraging time and reduced feeding success. Light pollution disrupts commuting routes and delays emergence. Welfare-informed tree management surveys trees before felling and retains high-value bat trees where safety allows.