Angry Birds Stella Level 15 Episode 1 Walkthrough

Been trying, but have had to settle for a two birder. I went low with the first so debris from the upper second explosion took out most of the debris below. I find it difficult to see how a one birder would have enough destruction to offset the debris points from the second bird. I assume swaps account for the high scores on this game, but have never done one, so will just have to continue playing for above averag scores with the birds I am given.