Ahoy Fivehollers
Below, (Thanks to Google) are some links that will get you information directly from the agencies you'll be doing business with, if you go commerical. You should be able to get most of the info you requested from within these links.
1# is NPIP from the feds,
http://www.aphis.usda.gov/vs/npip/2# is the IL state folks.
http://www.agr.state.il.us/AnimalHW/regs/ahpoultryregs.html3# is the contact information for your county
Cooperative Extension Service, Agriculture Home Economics & 4-H - (217) 849-3931 - , Toledo, IL 624
4# is a great resource for quail farmers for information.
http://msstate.edu/dept/poultry/bwqtopic.htmBy FEIN I assume you mean Federal Employer Identifcation Number. If your going to have employees yes, you need it.
I've started a few business's in my years most of them failed but one is still going 20 years after I sold it, so I guess I got my one accorn.
Starting a hobby business is great but it still takes the business planning that any other business takes. When it gets sticky is when you try to tell the IRS you have a business. Keep good records and reciepts on everthing.
If you plan on selling processed birds you may think about outsourceing that to a processing plant that already has the permits and inspectors.
I would not start any legal business until you have some perspective customers. Its like having your dog bred, don't until you have the litter sold.
Good luck lets us know what you learn along the way.