These are all great ideas ! I am
Up North and I believe I'm also gonna add corn scratch to the feed to help keep their body temps up for New England winters as well ... I have heard about the oyster shells I will check into that as well
Just throw them some scratch in the evening before they go to roost. Mixing in the feed will make for a high ratio, where if you save it for last thing before they roost they'll overnight with the extra carbs rather than burning them up all day.