I have eight 6-month-old pullet/hens, each a different breed (5 standard, 3 bantam). I got them all at the same time, as day-old chicks, and they all seemed to get along beautifully until about a month ago. I've noticed that the smallest, a bantam D'Uccle, is often standing by herself near the coop while the rest of the flock go about their business, adventuring and foraging around the yard. When they are all together, the others don't pick on her or hurt her. But she cries when she gets left behind (can't run as quickly as the others or doesn't want to go where they go) and I feel so sad! I'm not sure what's happening! Any thoughts?