Either a predator or the wet grass gets to them first. Once in the henhouse, the guineas are able to eat whatever I feed the chickens. My adult chickens are fed egg maker crumbles. If you have guineas only in your henhouse, you can feed a game bird ration. Guineas eat the nasty bugs that have destroyed my flowers.
Guineas love to look at their reflection .
When friends told me of Guineas sitting on a deck railing, I suggested they hang a mirror out on the side of the guinea coop at ground level. Guinea fowl like to look at themselves, and were on the deck railing admiring themselves in the reflection of the patio doors. They followed my suggestion, and the roosting on the deck railing stopped. My book will address most questions you will have about raising guinea fowl from egg through adult. If you have other questions, please use the forum linked below so that others who frequent the site may also benefit from any answers your question will receive.