Bird paradise

In the world of bird, there are different sizes, habits, and lifespans for each kind of bird. It sounds impossible to live in the same place. The struggles for survival or different living ways would make it hard to coexist. However, collaborating together with their own strong points to the battle of life would make the most of the current living condition and lower down the risk to the unknown threatens, so they could live better.That is an image of Utopia.