backyard friendly

We have a small flock of 4 backyard laying hens. We are looking to add another 2 hens (live in city limits, so we can have 6 hens total, and hopefully on the quieter end, pullet chicks). We have 2 Barred Plymouth Rocks, a Sapphire Gem and a Sapphire Olive Egger. All are pretty great foragers...