Describe the bug
No BA+ animals naturally spawn in worlds that I created before downloading the mod. In new worlds I have to fly around for several minutes to find a single BA+ animal. They do spawn perfectly fine from eggs. I think I just need to adjust configs and raise spawn rates but I've never touched configs before and I'm not sure which values to adjust and by how much.
To Reproduce
Steps to reproduce the behavior:

1. Load world
2. Play game for house
3. Don't see animals

Expected behavior
I expect to see the occasional BA+ animal with normal survival gameplay

Versions:

• OS: Windows 10
• MC Version: 1.14.4-forge-28.1.56
• Mod Version: 1.14.4-9.0.1
  -Other Mods: Pam's Harvestcraft 2 Crops 1.14.4 1.0.4, Optifine

Additional context
Add any other context about the problem here.

I walked around a bit more and found BA animals spawning naturally, I guess they just don't spawn in chunks loaded before I downloaded the mod. Sorry about that