This is embarrassing to us. The Mighty Eagle and Mighty Dragon can always destroy all pigs but Space Eagles can’t. You have to get Space Eagles at the right angle to get them to destroy all pigs. Tricks for Space Eagles can be found on Angry Birds Nest. Please tell us in comments if we should ask Rovio if they can get Space Eagles to destroy all pigs always or do you want a challenge?
Space Eagle Sometimes Can’t Destroy All Pigs