Thanks! I'll try that.
I was doing something different, I guess that explains it

EDIT: 141,560
Thanks man!
I tweaked the end a little. I used the third bird to topple the rightmost tower (from the offshoot of the egg), then I sent the fourth bird below, near the TNT boxes (after ricochetting off the wall) so it would explode the TNT and kill the big pig from underneath.