The turning point was the mysterious appearance of rabbits on Ynys Seriol (Puffin Island), which lies off south-east Anglesey ...

'There so many rat holes, it looked like someone had used an Uzi submachine gun' ...

Over the years it’s been mistaken for a small island or a vessel in distress. Rows of cormorants often perch on the seaweed and algae-covered lump, fanning their wings en route to their colony at ...