Hello. I’m from PA living in AZ but moving back in the next year. I’ll be moving to York county. Just wondering what the rooster laws are if anyone knows. I currently have silkies I’m breeding. Thx
Welcome back to PA, soon.

Totally agree with @fangedknight , Zoning Ordinances generally run from township to township. If you know where you'll be housing, (township), just givem' a call. They most likely even have a website with all kinds of information about the area & the local government.
Good luck on your move back!