Prince Harry and Pippa Middleton look-a-likes stage a walkabout In Soho to launch Alison Jackson's new book 'EXPOSED' on December 7, 2011 in London, England. (Photo by Ben Pruchnie/Getty Images)

Tami Varma, right, and her brother Robin, the grandchildren of Devendra Varma, a scholar of English gothic tales and an expert in vampire lore, pose in coffins at the Bran Castle, in Bran, Romania, Monday, October 31, 2016. A Canadian brother and sister are passing Halloween night curled up in red velvet coffins in the Transylvanian castle that inspired the Dracula legend, the first time in 70 years anyone has spent the night in the gothic fortress, after they bested 88,000 people who entered a competition hosted by Airbnb to get the chance to dine and sleep at the castle in Romania. A portrait of medieval prince Vlad the Impaler is placed on the wall. (Photo by Vadim Ghirda/AP Photo)

A robin perches on a spade handle in a garden on a rainy day in Lixwm, north Wales. Researchers said this week that when European robins are subjected to human-produced noise, their behaviour changes. (Photo by DGDImages/Alamy Live News)

Thousands of species of amphibians are endangered and hundreds have already disappeared, but in recent years, a team of scientists and conservationists have re-discovered some of these “lost” species and uncovered previously unknown varieties. Here: Miniature glass frog. (Photo by Robin Moore)

An American robin feeds on holly berries in a thicket near Elkton in southwestern Oregon on November 16, 2024. Many birds can safely consume holly berries, including blackbirds, redwings, and thrushes. There is an old wives tale that if you see a bird eating a berry, it is safe for humans to eat, but this is not true. Birds consume many plants that are poisonous to humans, holly berries included. (Photo by Robin Loznak/ZUMA Press Wire/Rex Features/Shutterstock)

The endangered kea is the world’s only alpine parrot, and one of the most intelligent birds. They show no fear of humans and are thieves and pranksters. The parrot is seen in the Whakaari conservation area, near Glen Orchy in the Otago region of New Zealand, a place where historic huts and mining relics are surrounded by stunning mountains covered in tussock. (Photo by Murdo MacLeod/The Guardian)