It's getting pretty cold here and I just found a buckeye nectaring at the few flowers that are left on my Brazilian Vervain. There are really no other flowers around. It's having a pretty hard time flying around what with it being so chilly, even in the sun. I was even able to catch it by hand.

I know they overwinter but read that it's supposed to be done in the South. Maryland isn't considered the south.

Should I build an enclosure for it and keep it indoors (have previous experience with this when I used to breed Monarchs) or should I let it outdoors to probably die?

It's pretty hungry, tried to drink my finger. If I keep it I'll get some Gatorade and soy sauce.

Let me know what you guys think.