Black and red and poisonous! Burnet moths

What does this strikingly black and red coloured moth say to you? Eat me? Or, don’t touch me because I am poisonous? It should say the latter! Because bright, contrasting colours like this are aposematic. They are universal warning colours which apply throughout the animal kingdom; and if you don’t know them, you will soon…

Something blue – butterfly wings

There are plenty of blue organisms in the world, but blue is nevertheless the rarest pigment found in nature. Most blue colours are produced by physical effects and are called structural colours. There are no true blue pigment in plants and thus no true blue flowers! There are blue flowers of course, but they produce this colour using modified red…