 Automimicry was first reported by the ecologist Lincoln Brower and colleagues, who found that monarch butterflies reared on cabbage were palatable to blue jays.However, monarchs raised on their natural host plant, milkweed, were noxious to jays - in fact, jays that ingested them vomited.Subsequently, Brower proposed the hypothesis of automimicry involving a polymorphism or spectrum of palatability