Complete the game to unlock all birds and the extras.
Golden Egg levels:
Unlock the following Golden Egg levels by performing the corresponding tasks:
LEVEL – HOW TO UNLOCK
Golden Egg level 1 – Get three stars in every level in Worlds 4 and 5.
Golden Egg level 2 – Tap the sun the level selection screen (iOS).
Golden Egg level 3 – Watch the credits, then tap the Golden Egg at the end (iOS).
Golden Egg level 4 – Go to the help screen in any level and tap the Golden Egg at the end (iOS).
Golden Egg level 5 – In level 1-8, tap the unreachable chest (iOS) or type open (PC and Macintosh)
Golden Egg level 6 – In level 2-2, break the beach ball.
Golden Egg level 7 – In level 4-7, zoom out and tap the Golden Egg at the top right of the map (iOS).
Golden Egg level 8 – In level 5-19, find the Golden Egg hidden at the top right of the left tower.
Golden Egg level 9 – In level 6-14, pop the yellow balloon.
Golden Egg level 10 – In level 6-14, pop the yellow balloon in the lower right corner.
Golden Egg level 11 – On Theme 8’s level page, drag your finger right to left to display a golden egg where Theme 9 would normally appear (iOS).
Golden Egg level 12 – Get three stars in all levels in “Danger Above” (Themes 6 through 8)
Golden Egg level 13 – In level 8-15, break the boxes in the far left corner.
Golden Egg level 14 – In level 9-14, fire the boomerang bird at the hat on the far right side on the small cliff.
Golden Egg level 15 – In level 10-3, break the rubber duck in the bottom left side.
Golden Egg level 16 – In level 11-15, zoom out completely to find the egg at the bottom left corner, then use the boomerang bird fired backwards.
Golden Egg level 17 – Get three stars on all levels in “The Big Setup”.
Unlock sound board:
Get three stars in every level in Worlds 1 through 3 to unlock the sound board.