Hello - We recently bought new chickens and a chicken tractor/coop. Two chickens are pullets, two are adults, about 1 year old. Chickens aren't new to us, but these chickens are. Our issue - the adults are an Aracana and a black Sex-link. When they first joined us, they both gave us eggs for a few days. Now, for about a week, only the Aracana is laying. The Black Sex-link seems happy and healthy but hasn't laid at all in that time. She's eating, holds her tail up, clucks, chills out and seems in general to be fine. We don't understand. Any help is very much welcomed!