My DH and I drove over an hour a few weeks ago to go to an auction. My experience was pretty much identical to yours. Tons of chickens, ducks, quails, etc., all stuffed into little boxes like the ones produce is shipped in.
They would reach in and pull em out then stuff them back in the opening. No concern for legs, wings, feathers or anything. They would pick up the boxes, I could see feet hanging out the open slats in the bottom and then they would just throw them down or scoot them across the table. Tell me feet and legs where not injured?
After the lot was auctioned they would throw them into a stack about 5 feet high. They were falling over and everything. Needless to say, I was absolutely in shock over the way they were treating these animals. I just cannot think of taking mine there and absolutely would not buy from it.