Somebody just did a study of chickens by strapping tiny video cameras on them to watch them when they thought no one was looking. Non-dominant males were observed surreptitiously making gestures to hens, proffering choice bits of food, but without the accompanying squawk that might lead to the dominant cock noticing and handing out a chicken-style ass whooping. Eating them suddenly seems cannibalistic. Because, sure, chickens don't look much like us, and if their big cousins were still around they'd have no compunction about serving us up with a side of slaw. But they're sneaky. What's more human than that?