You all had a hard time doing the first level? Wow. The game is actually easy! Put the big next on the big branch and small nest on the small one. Piece of cake :D
At first, when I saw this game I thought how terrible it must be... but when I actually opened the game and began playing it, I realized you can do anything, create anything with just those pixels floating around on the screen. A work of art that anyone creative and has a wonderful mind will enjoy.