i had the idea that Chocobos could be modded into rimworld.
Especially with the giddy up mod it would be very fun.
Chocobos would basically be like a ostrich.
Chocobos should also appear in multiple colours, not just yellow.
Have you checked out Alpha Animals (https://ludeon.com/forums/index.php?topic=46252.0)? They've added a non-trademark-infringing flightless bird mount that might suit you.
Thank you very much, sir.