There are three green parrots standing in the tree.There are three green parrots standing in the tree.Now one green parrot accidentally falls.There are two green parrots standing in the tree.There are two green parrots standing in the tree.Now one green parrot accidentally falls.There is one green parrot standing in the tree.There is one green parrot standing in the tree.Now the green parrot accidentally falls.There is no green parrot standing in the tree.