Penguins have wings that differ in shape from other birds, and all feathers change at the same time. Why evolution has led precisely to such features.

1. Penguin is a waterfowl; therefore, in the course of evolution, under the pressure of natural selection, there was a shape of wings that allowed for better swimming.
2. In addition, the penguin lives in a cold climate, and in order to maintain the heat-insulating properties of the feather cover, he needs to change feathers as quickly as possible.

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