They are on their own? They're probably fine as is, but I would definitely lay down some crumble where you want them to return. They probably already have places to roost, but if you give them a consistent food source and water, they'll probably stick right around.
I have 3 helmeted Guineas, Jackie, Jamie, and Jerry. As keets we weren't sure what sex they were so we gave them multi-sex names...haha. They are quite tame and in the sub zero Maine winters they come inside.
I have one that broke half of the upper beak. All we can do is let it grow back and watch he doesn't injure himself there in the meantime. It's wintertime now in Maine, so everything they peck....is rock hard. Doesn't make it any easier on him.