I am ordering some keet and want to raise them in a pen till about 6 weeks and then want to let then out for the rest of there lives in my fenced in backyard .
My question is will they come back if I let them out or will they just run away this is my 1 time with geineas?
My question is will they come back if I let them out or will they just run away this is my 1 time with geineas?

It will take a while but if your backyard is fenced in then I think you'll be fine
Just so long as you clip their wings until they know where home is.