Why do penguins have yellow?
Recent spectroscopic analysis of macaroni penguin ( Eudyptes chrysolophus) crest feathers and king penguin ( Aptenodytes patagonicus) neck feathers have shown they contain a yellow pigment that is chemically distinct from all other molecules known to give color to feathers. “Penguins use the yellow pigment to attract mates and we strongly suspect that the yellow … Read more