Is It a Bird or Is It a Beast?

The king of all birds, a proud and brave Eagle, gathered all his servants and left them with a very unusual task. The thing is that throughout the long and snowy winter, the once blue sky managed to fade, losing its charming blue. The Eagle, with the help of its feathered brethren, decided to rectify this situation, and by the arrival of spring, to return the heavens to their beautiful azure color. Each bird was tasked to bring one blue flap. However, the bat shirked from this work, arguing that she is not a bird at all, but a real beast. The same she said to the beasts, in order not to participate in the work.