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Iolo recalls tracking a great grey shrike in a blizzard in the Brecon Beacons and on another occasion looking for black-throated divers in the middle of a Scottish thunderstorm.

He looks back at some rare species that he鈥檚 filmed over the years including honey buzzard chicks in a secret conifer forest, white-clawed crayfish in a stream near Brecon, extremely scarce freshwater mussels in a Clwyd river and natterjack toads and little terns on the north Wales coast. Iolo also looks at the resurgence of the red squirrel on Anglesey and remembers using a speed camera on a running hare.