I remember when we had turkeys (christmas times). - We had lots of small sheds, to avoid infections.
Big losses with big sheds..
It makes sense to keep them somewhat separated - a few smaller crawlers (i think), would be a better idea...and more manageable.
When I had my farm I had zero luck with domestic turkeys. If any animal was born looking for a place to die it was them. My uncle had a turkey farm at one time. He raised turkeys for school thanksgiving dinners. He'd have dozens of turkeys die every time it rained..they look up..the rain would go into their nostrils...and they'd drown.
funny animals, aren't they?
We had so many die one Christmas - cross infections something, something, - after that we kept them in small sheds and had a foot bath in every one, in and out..