Move each of the birds into a nest with no remaining moves. To do this, use the mouse to click and drag a bird in the desired direction of movement. Each bird has a number on its head indicating the number of moves left. It is possible to make birds push other birds without using up a move for the bird being pushed. The game is won when each bird is in a nest with zero moves remaining, indicated by their color change to brown. Additionally, aim to collect all 3 stars for extra challenge.