Alfred Drummond-Herdman’s extraordinary timelapses have been viewed by millions – and led him to identify new species

Alfred Drummond-Herdman is possibly the only person in the UK who is sent animal faeces in the post out of goodwill. His bedroom in Edinburgh is full of the stuff: clothes have been removed from his wardrobe and cupboards, replaced with terrariums and plastic containers housing sections of cowpats, grouse droppings and rabbit pellets.

“I have a very understanding housemate,” he says.