Like, if a flock of birds feast on tomatoes from a distant population — ones with different color gene alleles — they might poop out those seeds as they fly over our tomatoes.

比如，如果一群鸟吃了来自遥远种群的西红柿——那些有着不同颜色基因等位基因的西红柿——它们飞过我们的西红柿时可能会把那些种子拉出来。