14-3 hives over winter on long table

This photo shows a long table with a hive in the double brood box. There is a top feeder on the left half of the double box. There is a double screen wire on the right side. On top of the screen is another hive in a deep Langstroth box and on top of it is another double screen wire and on top of that is another hive. This is actually three hives over wintering.