Countershading: Why Do Penguins Wear Tuxedos?

The video explores Abbott Thayer's theory of counter shading, a pattern where animals have lighter bellies and darker backs. Thayer proposed that this pattern helps animals blend into their environments, making them harder to spot. While naturalists found many examples supporting his ideas, recent scientific tests have shown mixed results. Alternative hypotheses suggest counter shading might protect against UV radiation, aid in heat management, or have other evolutionary benefits. The complexity of counter shading suggests multiple evolutionary drivers rather than a single explanation.

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