Hi everyone, I'm new here and new to raising backyard chickens. I live in South Jersey and the average temperature in the winter is mid 20s. I have 6 pullets now (2 ea of austalorps, gold laced wyandottes, barred rocks). I am trying to figure out what, if anything I need to do to prepare their home for the winter. Here is a picture of the tractor my husband built. There are two ~ 1' x1' windows that close shut on each side that we added after this picture plus the ventilation at the top. The roof is corrugated metal. The backside has a wide hinged door that folds down so a little air comes through there as well.
I planned on moving it closer to the house to have access to electricity for a heated waterer and possibly some light in the early morning also. Is it necessary to provide any heat or add insulation of some kind? Is light a good idea? My oldest 4 girls are 21 weeks and haven't started laying yet, the younger 2 won't be 20 weeks until mid-december so I want to encourage as much as possible.
Any opinions are greatly appreciated, as well as suggestions on what type of lighting/heating if warranted.