Ham 'Em High 14-4 is the fourth level of Theme 14 in Ham 'Em High. There is a Golden Egg in this level. See this page for more information about that Golden Egg.
Shoot the first Yellow Bird into the Moustache Pig. Then, the structure will fall and cause a chain on the ground. Most of the time, this chain will not pop all the pigs. If this happen, shoot the second Yellow Bird (or you can shoot the third one or fourth one if you failed shoot the second one) to pop the remaining pigs.