250 chickens a year wouldn't be that hard. 8-12 weeks from birth to butchering weight would mean you need a substantially smaller flock than 250 birds. If the

250 chickens a year wouldn't be that hard. 8-12 weeks from birth to butchering weight would mean you need a substantially smaller flock than 250 birds. If they scrounging for most of their diet, it may take a bit longer to get to butcher weight. Also, if they are scrounging you need more space- and your success will depend on keeping predators out. But you won't need 'several hundred' chickens at any one time to reach that goal.