Help the flock of birds fly further together!

Did you know the flock leader consumes the most energy, while the bird following the leader consumes less, and the one staying behind consumes much less? Being a leader is indeed a tough job!

Your job is to swap the position of birds so that they maintain their health level and fly as far as they can. Of course, staying in V formation will help a lot!

Challenge yourself and your friends how far you can make it!


HOW TO PLAY:
1. Touch a bird, and then touch another bird to swap their positions. Swap as frequently as you can to maintain their health level.
2. Touch a bird, and then touch a blank spot to stay out of formation.
3. Seletively take the items that appear from time to time. You probably want to stay away from the poison and cloud.


SCIENTIFIC BACKGROUND:
A flock of birds always fly in a V formation with a leader at the front to fly faster and conserve energy.
The flock leader consumes the most energy to pace and lead other birds. As the leader tires, one of the following birds moves up front from the rear to take the leadership while the ex-leader moves back to rest. It is known that the whole flock adds at least 70% greater flying distance than if each bird flew on its own.



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