Definitely grow lots of curly Kale. “Redbor” matures in 55 to 65 days and “True Siberian” is ready to eat in 70 days. Broccoli, tomatoes, snow or snap peas- avoid uncooked beans for chickens there is a chemical in them that is bad for them. Mustard herb (Brassica juncea) Oriental mustard. We grow carrots, but shred it when given it to them. (They won't eat it plain, but will eat every bite if shredded.) Lots of yellow and green squash of different types, and pumpkins for late in the season. For us, smaller plants that yielded higher amounts of pumpkins vs. large pumpkins worked better. We found our chickens enjoy basil, mint and marigolds for dark yolks, so we grow lots of these. The bees like this too.
Also, beetberry (strawberry spinach or Chenopodium capitatum). In late summer when everything else is nearing an end, beetberries continue to thrive- even unwatered, and in poor soil conditions. They will reseed themselves for many volunteers the following year. It's kind of a freebie, and nice to have as a bonus, even in October. Also try, Tetraploid perennial ryegrass and sunchokes. Clover, alfalfa, buckwheat, etc.
Also, grow some trees and fruit type bushes. We have Anna's Apples, and have found them to yield good amounts of large, delicious apples, even in young trees. Brazilian cherry, nectarines, peaches, Olive trees- messy, but chickens like them. Try table grapes as borders on your fenceline, and thornless blackberries, blueberries, and raspberries.
