Well, 0.00000000000000000000000000000000000001% of the people in this wiki have read my first blog that was about the same thing with this one (the one you're currently reading) but based on the Angry Birds Movie. So, there you have it:
Birds
Red
Red isn't actually an orphan. His egg was lost before he hatches and the people from the nursery of Bird Island. Then they went to all the houses except for the houses of Mighty Eagle's and Red's Parents's. They where both living in Mighty Eagle Mountain. But as his parents weren't found, he was considered an orphan. Later, he was the first one to realize that the pigs wanted to do something weird, and while he saved 366 eggs with Chuck and Bomb, his budies, he saved the 677th egg, the Blues, on his own. I actually believe that Red will meet his parents in the Movie's sequel. But we'll find out in [insert remaining time for ABM2 here]
Pigs
To be Continued...