But this was not the only reason for their herding behavior. Science suggests they migrated to fend off starvation.

但它们的群居习性并非仅为安全。科学表明它们迁徙是为了避免挨饿。

A lot of behavior science research draws from samples that are pretty WEIRD— meaning Western, educated, industrialized, rich, and democratic.

很多行为科学研究都从非常奇怪的样本中抽取——意思是西方的、受过教育的、工业化的、富裕的和民主的。