We hear it every season, but there's so many pressures.. night vision, airgunners , ferrets and the possible spread of myxi vhd , increase in predators bops especially, foxes , badgers, mink stoats weasels, cats, weather I'd say is a big one, suitable habitat, foot traffic has been a big one near me I think the pressure of hundreds more dog walkers pressures them off ground and food sources. Not sure why all these empty fields near me don't see a pair of eyes anywhere, more likely see a deer than a rabbit tbh.