Even when demonstrator hens reacted with obvious disgust to a specific food, via vigorous head shaking and bill wiping, there was no evidence that observers subsequently avoided eating that food.

即使是当作为演示的母鸡对某种特定的食物表现出明显的厌恶，比如使劲摇头和擦拭嘴，也没有证据表明它们随后会避免食用这种食物。