Hi!! I am new here and I have a couple of questions about new chicks. They are about 3 weeks old, and I got them at a Co-op when they were 2 weeks. So here are my questions: Is it okay if they eat/peck at the pellets or floor they are on? Is it okay if they are losing their bottom feathers as well as the feathers on the bones next to their wings? Should the nesting boxes be up off the floor in the coop? Can chickens swim in creeks? Thank you soooo much!