Prince Harry and Meghan Markle have got good taste when it comes to their library, reading their son Archie the delightful book Duck! Rabbit! in a clip released in honour of his birthday.The royals, who are currently in Los Angeles after they stepped back from senior royal duties earlier this year, shared the adorable video of Archie sat on Meghan's lap for charity Save The Children.The 2009 New York Times bestselling children's picture book about an optical illusion that looks both like a duck