Toss the Black bird into the main structure. Either target the middle of the wall or the small ice blocks near the roof. To get 160k+ points you need to make your directly hit on the small rock which is sitting on top of the big boulder next to the main structure. Aim carefully because one pixel can make the whole shot will go into the wrong way. If your shot sucessful, you should have more than 95k (with a very rarely chance, it can be more than 100k if you hit directly on the rock). Based on the destruction, bomb the debris while ricocheting the White bird into the piggy above. This shot can be very difficult about the bombing position and the ricochet position so this will be the shot that you usually choke and miss. For a nice falling, you should bomb just to the right of the kart which was next to the main structure. She should ricochet to the ice triangles down. You must bring almost all of the blocks at this top-right structure down to destroy them and get a nice score. More detailed instructions please visit AngryBirdsNest.