That he doesn't think free-range birds taste better than factory birds due to being free-range. He believes that they're being fed better quality feed and that factory birds could taste as good if they had better feed. I can't speak to the feed question, but I find free-range birds to have a firmer, more toothsome texture which I've attributed to the exercise they get. It's certainly well-documented with many animals and birds that the more exercise muscles get, the more flavorful they are.