Grey Squirrels introduced in 1911 have impacted Ireland’s Red Squirrels, but the Reds are now rebounding due to increased Pine Marten numbers. The 2026 All-Ireland Squirrel and Pine Marten Survey has been launched, and Colin Lawton, Ecology Lecturer at the University of Galway, joins the programme to explain the project...

Derek Mooney and guests explore the natural world in all its forms. Listen live every Monday at 10pm on RTÉ Radio 1.