Angryverse/1-7 (Poached Eggs)

Behold, a bunch of glass blocks stacked on top of each other!

Strategy
Don't let its massive size fool you, this fortress may look tough, but it has one major weakness, to exploit that weakness, all you have to do is to launch the first red bird into the left-bottom horizontal wooden beam below the left pile of glass, this will shake the whole structure and all the pigs will pop, three unused birds should be enough bonus points to get you the three-star score of 45,000 or higher.