It was extinction by dilution,and to the ornithologists it was just as tragic as the more dramatic demise of the passenger pigeon or the Carolina parakeet.

• 混种将导致野火鸡灭绝；对鸟类学家来说，这和北美候鸽或卡罗来纳长尾小鹦鹉大批大批地死亡同样悲惨。