Asked and answered here:
https://www.backyardchickens.com/th...lanting-new-grass.309799/page-2#post-20431362
https://www.backyardchickens.com/th...lanting-new-grass.309799/page-2#post-20431362
I was wondering if it would be better to lay down sod instead of grass seed, if you have Chickens
I would not use sod, it is usually treated with several chemicals(pesticides, fungicides, fertilizers, etc).
Trying to grow grass where chickens have destroyed, and will be on it again, is folly, IMO.