rely on visual cues, such as the colours of plants, to decide where to lay their eggs. They favour green surfaces in particular to display oviposition behaviour. This colour preference could be due to the fact that the large white's food source also acts as a host plant for oviposition. Most females choose nectar plants like buddleia or thistles, which are green and ideal plants for the larvae. These plants, used as oviposition sites, typically contain mustard oil glucosides, whose primary function is to help the larvae survive as their essential food source. For instance, previous studies have shown that the large white larvae do not survive if the adult butterflies oviposit on a different host plant such as broad bean (Vicia faba) because this bean does not contain the proper nutrients to aid larval development. Hatching The large white eggs hatch approximately one week after being laid and live as a group for some time. The hatching period constitutes around two to seven hours. Upon hatching, they cause a lot of damage to the host plant by eating away at and destroying the host plant. Behaviour Migration The large whites are found throughout most of Eurasia, though there are some seasonal fluctuations present due to migration. The northern populations tend to be augmented during the summer migration season from butterflies from southern areas. The large whites fly starting early spring, and keep migrating until seasons shift to autumn and the resultant cold weather. This means the large whites typically take two to three flights per butterfly reproductive season. Large white butterfly migration patterns are typically observed only when there is a disturbance. In general, the large white butterfly's migratory patterns are atypical; normally, butterflies fly towards the poles in the spring, and towards the more temperate Equator during the fall. However, they fly in random directions, excluding north, in the spring, and there is little return migration observed. However, it has been hard to track entire migratory paths, since these butterflies can migrate more than 800 kilometres; thus, individual butterflies may not migrate the 800 kilometres, but rather that other butterflies start their migrations from where the other butterflies ended. Hibernation Large white broods in the north have not been seen to overwinter, or hibernate over the winter, successfully. However, they have been observed to hibernate in the south. Territorial behaviour Males do not display considerable amounts of territorial