We have five laying hens that are about a year old. 2 Wyandotts, 2 Americanas, and 1 Welsummer. They have a small coop, but free-range in our fenced pasture. We lost our other Welsummer a few months ago and can't seem to find another mature hen to replace her. Would it be wise to buy a baby or if we can find one, a pullet, and put her with our other hens? What would be the best way to do this so the hens don't "eat" the new one!