Adding older chicken with younger guineas?

[DesertLab]

I have 21 two month old guineas in a run that is 25x12 and 9 feet tall. I have 4 one year old guineas in a second run... The older birds free range during the day and come in at night. Any thoughts on if I can add two hens and one rooster (just started laying) in with the younger birds? When the guineas are much older I would like them to free range together. Do the older birds usually accept the younger birds? The chickens will only go out for supervised free ranging.

 

[R2elk]

I have 21 two month old guineas in a run that is 25x12 and 9 feet tall. I have 4 one year old guineas in a second run... The older birds free range during the day and come in at night. Any thoughts on if I can add two hens and one rooster (just started laying) in with the younger birds? When the guineas are much older I would like them to free range together. Do the older birds usually accept the younger birds? The chickens will only go out for supervised free ranging.

I would not add any chickens to a run with that many guineas in it.