An abundance of toys can go a long way in filling the gap between owner companionship, so pets are not too bored when they are alone. When they have these toys, they will play happily and will not become frantic, depressed, mentally unstable, self-injurious, or even aggressive towards their owners due to lack of playmates. These toys exercise the parrot's leg muscles, improve their physical health, train their behavior, and make them act smarter.