Watch to find out why the kingfisher is called king of the river. 👑 👑👑 👉 Fun fact, kingfishers close their eyes when they dive using a third, see-through eyelid, called a nictitating membrane, so they can see and catch their prey with precision. 😯 If you want to see more incredible UK wildlife, make sure to tune into the next episode of #WildIsles this Sunday, on BBC one! #uknature #ukwildlife #kingfisher #animalfacts