I believe Tractor Supply has a similar policy. It is likely intended to prevent people buying chicks as "toys" for birthday parties and Easter. Though the law likely applies to purchase and not ownership since obviously birds pass on etc...
Really glad my local feed store doesn't have a minimum...
OH has a minimum on how many chickens you can own? Or a minimum on chicks sold at stores?
Can't see how they can mandate people must own 6, what happens if a bird dies?