|Red admiral - Wikimedia|
The red admiral will migrate north in the spring but not all migrate back south. Some will hang around, taking their chances on surviving a mild winter. Like the mourning cloaks and other species living over winter as adults, they don't depend on nectar for their food source. Instead they primarily consume tree sap, rotting fruit, carrion and animal dung. They commonly land on humans, presumably attracted to sweat - if one lands on you try not to think about what it ate last.
|Dorsal view - Wikimedia|
Camouflaged red admiral Vanessa atalanta roosting on larch trunk © Adrian Hoskins
Yes, England! They are found in temperate Europe, Asia, and North Africa. The British love their butterflies and are particularly fond of red admirals. Some of their population migrates from Southern Europe while recent studies have shown that some survive the winter as adults in southern England. Southern European residents will migrate to Scandinavia while some North African butterflies will cross to Southern Europe.
|Green eggs laid on spiky nettle leaf rather than ham. Wikimedia|
|Leaf-wrapped chrysalis -Wikimedia|
* Missouri species that overwinter as adults include the American lady, anglewings (commas and question marks), goat weed leaf wing and mourning cloaks.