Angry Birds Walkthroughs → Golden Eggs
Angry Birds Golden Egg 11 Walkthrough
Go to the World 8 screen where you view all of the levels. Slide that page to the left to reveal the egg.
How to get the Golden Egg star is included in this video
For Mac and PC: Drag to the left as you are holding down the mouse button inside the frame where the levels are. Thanks to Kristian in the comments for this tip!