Their diet is rich in “carotenoids,” which are natural pigments found in algae ... feature—it is a fascinating example of how an animal’s diet and biology are deeply interconnected.

Animals usually appear blue to the human eye because of microscopic ... The blue colour is produced by pigments found in the fish the birds eat. Studies have shown males that had recently eaten fresh ...

Each cone type contains a pigment sensitive to particular wavelengths of light. The range of colours an animal sees depends on the combination of colour-sensitive pigments in their eye and the ...

as well as animals like snakes and birds. Researchers say the red paintings, made using pigments extracted from scraped ochre, make up one of the largest collections of rock art ever found in ...

Archaeologists have discovered the world's oldest known animal ... pigment, the life-sized picture of the Sulawesi warty pig appears to be part of a narrative scene. The picture was found in ...