Why do Eurasian red squirrels have ear tufts?

Is it for warmth, communication or something else?Why do Eurasian red squirrels have ear tufts?
This species of squirrel has larger ear tufts that other squirrels... There are two identified functions for these ear tufts: Firstly, they grow thicker and more prominent in the winter, which suggests that the primary function is to keep the ears warm, and help circulation of blood in a thin organ such as the ear.


Secondly, not only squirrels, but also for instance owls, use ear tufts for intimidation: To appear larger and more frightening to possible predators.





The last, and less certain function of these ear tufts, is camouflage. Animals who live mainly in trees, sometimes display excess hair on different parts of their bodies, to look like a piece of broken branch, when sitting still.Why do Eurasian red squirrels have ear tufts?
The ear tufts serve a purpose just like their bushy tails when spread over their heads to keep cool also helps them to keep balance when jumping from branch to branch.
That's just the way they've evolved over the past thousands of years. I'm not sure if they have a use, what I could think of is a usage in recognition of members of a similar species. That would enable partners to know whom to mate with. They could just not have a use but have caused no trouble so they've always kept them.
To stop rain getting into their inner ear canal, honestly!