MY advice before getting any more hens is to ensure the safety of any you may get in the future. Is your electric fencing working etc. Is their run secure. Is the fox still around? Can anyone get rid of it for you?
I would only ever introduce a minimum of 2. There will be shenanigans while the pecking order is sorted out but and ensure no one hen is guarding the water and feed. Let us know how you get on.
Penny and Freckles - the WArren Girls'
Star and Flopsy (the latter of the floppy comb) both members of the White Star Faction.
Fedora and Florence the Cream Legbars
Emily (see Emily lay) and Erica the Light Sussex babes
1 current husband aka the structural engineer
1 large organic allotment
The Lady Isabella Pickford-Fiennes, a feline of distinction and excellent mouser