One of Europe's rarest butterflies spotted in Norfolk

One of Europe's most rare butterflies has been spotted in Norfolk.

The scarce tortoiseshell also known as the Yellow-legged Tortoiseshell, is so uncommon it hasn't managed to survive hibernation here for more than 60 years.

But it was spotted in Holt country park this month. Conservationists say this new sighting is a truly historic event as it marks the first time this stunning butterfly has ever overwintered successfully in Britain.