Mr. Cadbury's Parrot Game

From the box: Balance Mr. Cadbury's Parrot in the tree, then take turns placing marbles in his nest. The nest will get heavier and heavier until ...it falls. But watch out, not all marbles are the same size. Lots of fun for all the family. NB: this game does not contain confectionery. (But it should - we use Cadbury's mini eggs!)