Birdday Party 19-14 (or Birdday Party Cake 3 Level 14) is the fourteenth level of Cake 3 in Birdday Party. There is a Golden Egg hiding underground, behind the slingshot in this level. See this page for more informations about that Golden Egg.
Loft the Boomerang bird high, targeting his reversal to topple the left tower. Send one Yellow bird through the cake in the center of the level. Then, if the pigs are not all popped yet, send another into the tower-encased pig on the right side.
There is a "hat glitch" in this level (before an update that makes this trick no longer available). Sometimes, the Yellow Bird will end up in the Boomerang's red hat and he'll stuck in there and start spinning. Everything that goes on top on this hat will be destroyed. To do that, you need to aim the first Boomerang Bird high to make the hat fall into the left gap (at the left of the Moustache Pig's structure's bottom) and the debris will fall into the hat and broken along with the popping pigs or aim him slightly lower to make the hat fall into the right gap so when you shoot Yellow Bird straight into the right structure, the boulders or the Yellow Bird will start to stuck and spinning against the red hat. This will give you total destruction. Now, as this trick is gone, so no one can get more than 140k in this level.