Thanks for the tip.

On 2-15 probably did exactly what you did, 100of times.
As i remember;
1st bird drops egg on 1st column and hits the top, making them fall and explode the tnt, taking out the right 2 pigs and the 2nd left one.
2nd bird drops bomb to 1st pig and hits remaining 1st column.

The "secret" is, making the top 3 stones fall on both sides of tnt before explosion, so that they can fly with the explosion and take out the pigs..
I sense that this can be done with 1 bird, although i am not sure if that'll be high score.