All species of mice have different present frequency during the four seasons: striped hamsters mostly appear in spring, autumn and winter, and ground squirrels in summer.

• 艾鼬食物中的各种鼠类四季出现的频次亦不相同：春季主要食黑线仓鼠，夏季主要食草原黄鼠，秋、冬季仍以黑线仓鼠为主。