I have been doing everything. Oak, poplar, beech, hickory. We live in nc peidmont zone 7b.
I just found put that they love redbud pods though. Im thinking of collecting those for winter.
My goal is to replant my forest with trees that can feed the animals. Black locusts, wild plumb, crab apple, persimmon, mulberry, elderberry. I just ordered last year from the forest service a bunch of those.
My thoughts are to create a Savannah with natives and then do multi species grazing in it.