What will happen to animals and insects that use the Earth’s magnetic field when the poles reverse?

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What will happen to animals and insects that use the Earth’s magnetic field when the poles reverse?

In: Biology
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The earth’s magnetic poles will not reverse overnight or over the course of even a few years; estimates are that it could take between a thousand and ten thousand years for a reversal to occur. All the critters will be adapting along the way.

There are some estimates as low as dozens of years, but still, critters adapt or perish.

https://en.wikipedia.org/wiki/Geomagnetic_reversal#Duration

Pole reversals take a long time, much longer than the lifespans of these animals. Additionally, animals that use magnetic force tend to use it as a reference rather than simply being attracted to a particular direction, and use it as one of many cues. So for example, a bird that wants to make sure it continues in the same direction even when visibility is poor can use its magnetic sense to make sure it stays pointed the same way. And birds learn which way leads where when learning their migrations. But as long as the magnetic field doesn’t shift much from year to year, they won’t have a big problem.