Monarchs are the only insects to migrate such a vast distance. So, by teaming up with biologists, mathematicians set out to recreate the internal compass they use to navigate on that journey. This consisted of two control mechanisms – one based on the timekeeping “clock” neurons in the butterflies’ antennae and the other from what are called azimuth neurons in their eyes. These monitor the position of the Sun.
Great monarch butterfly migration mystery solved
