Keeping quail in is not the problem. Keeping everything else out is a big problem. Rats will easily go through 1" wire. I've had rats chew through the small vent holes in my wooden rabbit hutches once they got the taste of quail and destroy them. I upgraded to a large 5 section custom built cage that has 1/4" hardwire mesh cloth all over, and just last week lost a quail to an owl that clung to the side of the cage and managed to snag a quail with it's talon and slice it up. I hate to say it, but 1" is going to let everything have access to your quail, and everything really likes the taste of quail.