[ExI] red rabbit

[Adrian Tymes]

Can some rabbits, or some creatures the rabbit interacts with, see in
ultraviolet?  If so, this marking would be visible to them.  The utility
depends on who exactly sees it: warning off predators, welcoming fellow
rabbits to breed with (perhaps denoting it's this specific breed of rabbit
so as to encourage breeding with that rabbit instead of others), and so on.

On Mon, Mar 8, 2021 at 2:25 PM William Flynn Wallace via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> OK, you evolutionary theorists, come up with an explanation for the rabbit:
> https://www.nature.com/immersive/d41586-021-00485-2/index.html?
>
> bill w
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