Even more interesting, in fact: Every year, around October, the colony splits up, and all bats hibernate separately, but year after year, when the bats come together again in the spring, the communities stay the same.
更有趣的是 每年10月前后 种群分散开了 所有蝙蝠都分开冬眠， 但是年复一年， 当蝙蝠在春天再一次聚在一起的时候， 两个群体保持不变。