We recently picked up 10 chicks from a local feed and grain store. We have 2 prairie bluebells, 2 Delaware's, 1 Buff Orpington, 1 Cinnamon Queen, and 4 Isa Browns. All of the chicks are doing great! They are about 3.5 weeks old now and thriving. However! One of our Isa brown chicks is much...