Steps

1. Players play as a group and each group is represent by three players. Vote conducted in whispers thread or other ways which are then agree by all the players. 
2. Two players in the group will holding each other hands (left hand holding another person right hand and vice verse) for nesting. Another player will be in the hands of the enclosure as the "Birds".
3. Some of the other players will be the "Birds" without nest.One of the players will be selected to become judge or referee to give orders.
4. When the game started, "Bird" without nest needs to be running around the nest, as soon as the referee issued a decree on "change", "bird" will move to find a new nest. Birds without nest can enter the empty nests.
5. After the exchange is completed, there will be "Birds" that can not fit into any of the nest. The game can be repeated several times.
6. Changes can be made to provide opportunities for players to be the nest to serve as "Bird" also. The game can be terminated after obtaining the approval of all the players.