I have found this mod called Roost, and it allows you to collect eggs and breed chickens, which in my opinion fits quite nicely with the Animania theme, and it has very nice textures too.

However, the mod doesn't really seem to be compatible with Animania. The only real integration on my part was that it turned the Animania chickens into the chicken items.

I tried contacting the creator of the mod about this, but he seems to be inactive, so I decided to contact you. Is there any hope that this will get an integration with Roost?

Also, the source code for Roost is here:
https://github.com/timrwood/roost