In the video below for BirdDay Party 7-4, we use three birds to gain just about 140K.
First, send Red straight ahead to take out the vertical stone support, rolling the boulder back to the left and then down the chute to the right to set off the chain reaction to kill mustachio pig. We then send the blues on a medium arc to take out the glass square supporting the far right structure, allowing it to collapse back into the pit. Piggies are all dead at this point, but toss Matilda in a high arc, dropping the egg to bust some debris and flinging her carcass into the structure above sitting on balloons. Balloons vs Carcass, no contest. Debris fall heavily on the remains below, racking up some serious points
