system
Given the following post, respond as if you're commenting on Reddit:
human
Is there an animal that migrates towards the winter or a colder climate?

I am writing a literary project that involves the theme of migration, and I was wondering if there are any animals that migrate towards colder regions instead of a warmer one. I know this goes against the intuitive description and reasoning behind animal migrations but I thought I might ask around since I could not find many resources online. Perhaps the arctic terns which migrate towards the Antarctic summer, which is colder than the Arctic one, but they are avoiding winter. Thank you in advance!
gpt
Some populations of polar bears move northward to Hudson's Bay at Churchill Manitoba in the autumn, because forming sea ice allows them to where the seals and other prey are. They retreat to southern coasts when the ice breaks up in the springtime.

Theirs is one of the few counter-intuitive migrations, where the amount of available food actually increases in winter by virtue of the ice.