Well birds are pretty hard-wired, as it happens, so most of that is already in their DNA, but to supplement it, part of Ben's idea is to use homing pigeons to help train the young passenger pigeons how to flock and how to find their way to their old nesting grounds and feeding grounds.
还好大部分鸟类行为 都包含在他们的DNA里 单位了保险起见，他提出一个想法： 利用信鸽 教导年轻的旅鸽如何结队飞行 并且找到原本筑巢、 育幼的地方