BELFRY

To get to their destination, the butterflies follow the direction of the sun. However that is not easy as it sounds, because thanks to the Earth's rotation, the sun is constantly moving. So this, is how they do it.

First, with the help of a 24-hour body clock, known as circadian clock that lies in their antenna, the butterflies deduce whether it's 8 in the morning or 4 in the afternoon. This helps them figure out whether the sun should be on the right or left. Once they know that, they follow the angle of the sun, which is captured by special cells called photoreceptors that sit inside their eyes, to get to their destination. Scientists have dubbed this surprisingly sophisticated system - time adjusted sun compass.