Chickens will kill the grass in short order. With turkeys, they are not so aggressive on the ground. The grass lasted a long time but now its gone. I mulched and seeded the coop but they probably eat it as soon as it sprouts.
One method for fresh greens is duckweed. Tyler Ludens provided me some for my
pond. After researching it , it seems like a viable source of fresh greens with a high protein content. I added a
water trough. Mosquitos came so i added minnows. I now have an effective mosquito trap that will help overall. I added some duckweed (little tinely floating plants) and they are eating them. I am trying to build up inventory but it should not take long. Each plant divides into 2 plants every couple of days.
This gives fresh greens, a mosquito trap, and a water source they seem to prefer over the normal chicken waterers.
As this needs to be cleaned, i will dump it out. They seem to really like minnows so it will go out with the water. Replacement minnows are a short walk to my
pond (another topic i will respond about soon)