We discover why the birds are so darned angry in this latest trailer for "The Angry Birds Movie."

Directed by Clay Kaytis and Fergal Reilly, the CG-animated film stars Jason Sudeikis as the easily ruffled Red, who raises suspicions about the mysterious green piggies who visit the birds' island paradise. However, after his warnings are ignored, and the Bad Piggies sneak off with all of the birds' eggs, it's up to Red, Chuck (Josh Gad), Bomb (Danny McBride) and their feathered friends to get them back.

Opening May 20, “The Angry Birds Movie” also features the voices of Maya Rudolph, Hannibal Buress, Kate McKinnon, Keegan-Michael Key, Tony Hale and Peter Dinklage.