Where's the Ostrich?

24 cardboard ostriches are placed in slots in the game board. Their heads are in the sand, so the color cannot be seen. Six slots remain empty. Additionally, each player has "nest" of six slots in the six colors used in the game. A player now pulls out one ostrich. If the color matches that of the first empty slot in the player's nest, he or she gets to place it in the slot and try for the next color. If there is no match, the ostrich is put back in any of the empty slots on the game board. The first player to fill his/her nest is the winner.