Baby Chickens picked up with the Chicken Catcher turn into adults when placed back down.

Ah, yeah, I'll have to think about how to solve this one...

Add "Time till grown:" to the bottom of the tooltip, make it be equal to the time the chicken had left before picked up, make chickens with in unusable in your machines.and maybe integrate it into the Breeder. :P

Adding "Time till grown" for each chicken item will make them unstackable. I think I'll just prevent baby chickens from being caught with the Catcher for now.

You could potentially make a baby chicken item that defaults to max Time to grown and allow baby and normal chickens to stack differently.

I added an alpha release file to CurseForge, if everything looks good, I'll promote it to the official 1.3.0 release.

https://minecraft.curseforge.com/projects/roost/files/2635449

This is addressed in 1.3.0