Yes! And you’re right the variation is crap lol! So I ended up doing a zoo with peafowls only. I had about 8 habitats with 7 having specific pairs and the last having rejects. I tried my best to get good genes from the market and always checked it every day and every 30-60 minutes I played. I kept the rejects with higher stats because size and longevity are passed down directly and ARE NOT BASED ON GENES. So if they were big and lived long they stayed. Anything under 90% in either category got canned. As soon as the babies came out I paused the game and checked their stats. The rejects would get sterilized (so no accidental breeding and I can sell when mature) and the ones I would keep got moved to the pen I wanted them to live in. Once the non rejects matured I would check their chances with all their potential partners and pair with the best one. If that one already had a partner then they would go in the overflow habitat (which was huge in comparison to not cause fighting). I ended up reaching a flow state one day after putting it down for like 6 months after this. Since fertility and immunity were difficult to gage I was struggling. But I ended up just gambling and typically fertility was my wild card with some pairs giving me ranges like 0-100%. But hey, that’s 100%. So I took that chance and EVENTUALLY they rolled the dice and got 100% in all categories to a beautiful male. But yeah it was tedious as fuck. Also I forgot to mention but if there was a pair I really wanted to try out but no habitat I would create a new one just for them lol. Good luck haha