You have to complete the level and/or get a good rating/score.
You unlock a bonus level and you have to fight big bird
When three stars are achieved on every level of Angry Birds, the player will be awarded with five golden eggs.
Can you be more specific? Which episode are you talking about? In general you unlock any level by completing the previous level.
enter level unlock code
Ha ha probably
There is a video tutorial on how to beat that level and how to unlock some new too -see related link
there is no way to make your own custom Angry Birds level YET
Mighty Hoax is unlocked after you beat every level in the first world.
3. Harvest Above. Level 14.
play it
yes
in your bum