Dear Student,
If certain animals are unable to migrate, they respond to unfavourable abiotic stress by "escaping in time".
This means that instead of migrating to some other place , they avoid unfavourable conditions by staying in the same place but by hiding or sleeping .
E.g. by going into long sleep as in the case of bears (HIBERNATION).
Thus they don't escape from the place as such, but also don't show any visible activity.
Regards,
Ruchi Bhatt