On a pleasant autumn evening in 2007, a wildlife warden at the Dersingham Bog nature reserve in Norfolk took a friend to see two female hen harriers returning home to roost. But as dusk descended, they were startled by the sound of shotgun blasts.
After the first shot, they saw one of the rare birds of prey “immediately fold and drop out of sight”. About 30 seconds later they heard a second blast – and another harrier fell from the sky.
