Caterpillars munch on:
Adults take nectar from:
They also feed on sugary sap from trees.
Peacocks hibernate through the winter in their adult form, sometimes in groups. Up to 40 individuals have been found together in one place, and these groups may contain other species like Small Tortoiseshell butterflies and Herald moths. Preferred hibernation sites are tree hollows, wood piles and outbuildings.
There is even more about this species on the main Butterfly Conservation website
When threatened, these butterflies flash their eye spots and ‘hiss’ to surprise and scare off would-be predators.