This mod adds spawns for the Bison on all maps. It uses the vanilla Bison, with no changes at all, and just adds the spawn entries. The bison spawns in the grasslands on any map that has these. On Scorched Earth it spawns in the Green Desert, on Abberation in the Fertile Land Easy zone and on Extinction in the City Park 2 zone (there where you can also find Ovis).
All spawn entries have a weight of 0.0125 (just like the Ovis in most of these zones) and they spawn in groups of 2 to 4 with chances of 100% / 100% / 50% / 25% for the amounts 1/2/3/4.
Discord: https://discord.gg/J9pFYKcn3W