I'll be setting up a four frame observation hive in a window frame of a friends house this winter. He's an advocate of apitherapy and will be taking about 20 bees from the hive per day.

Big Question:
If the hive is being fed and the inside temperature is warm enough, will the hive rear brood? Or will the hive act as any other wintering hive?

Anybody had any experience?
Thanks!