On Sat, 14 Dec 2013 16:03:06 +0000, Another John
wrote:

Just found a Small Tortoisehell on our back bedroom windowsill --
absolutey no idea how it got there.

However: is there anything I can do to give it the best chance of
surviving the winter? Put in a dark place? Light place? Cold? Warm?
Inside? Out?

Cheers
John
One autumn we observed a sluggish Red Admiral butterfly fall out of
something while some boxes were moved in an unheated outbuilding,just
happened to have some of that armaflex pipe insulation handy so the
butterfly was gently pushed into a short length. This was then placed
in a dark draught free corner and forgotten about. The following
spring it was a nice surprise when the Butterfly emerged and flew
away.
Most of the time the building would have been unlit with lights only
on for during short visits.
You don't want a place where it may get warm as it could come out of
hibernation too early before the outside world conditions are suitable
for it to survive. There must also be access to the outside for when
it does wake up.

G.Harman