Flamingos are an animal that we don't usually see, with red feathers and a unique reputation: he was once seen feeding his children with his "blood". Here I use my own professional point of view to give you a good explanation, what is this so-called bright red blood? The "blood" we see is not real blood, but a red sap that flamingos regurgitate from their stomachs. You might be wondering what exactly is this red juice? In fact, this is a substance called astaxanthin produced by flamingos after eating algae and plankton. Astaxanthin turns red at high temperatures, and in the same way, astaxanthin spit out of the flamingo's stomach is red. Astaxanthin is also one of the reasons why the fiery body appears red. Some algae, crustaceans, and plankton are rich in plant pigments such as lumebin and astaxanthin, which flamingos feed on. These pigments precipitate in their bodies, and the enzymes contained in the liver break down astaxanthin, which makes their bodies and feathers appear pink or orange-red. Flamingos are generally white without the participation of pigments in these foods, as can be seen in newborn flamingos. Understand, flamingos, this is a small point of our knowledge
