The search for nectar costs insects a lot of energy, so they have to be as efficient as possible. Colorful patterns on the petals can help with that. Be it mallow, foxglove or forget-me-not: many ...

Be it mallow, foxglove or forget-me-not: many flowers bear colourful patterns, which are known as nectar guides in biology. They are assumed to show the pollinating insects the shortest way to the ...