Owl chick hoots from inside its egg

The footage was filmed at the York Bird of Prey Centre by its managing director Andrew Fawcett. When Mr Fawcett whistled the chick inside the egg responded by chirping. https://www.dailymail.co.uk/news/article-9520591/Owl-chick-hoots-inside-egg.html?ns_mchannel=rss&ns_campaign=1490&ito=1490