we are new to chicken farming. we started our group with four chickens but sadly lost one on the first day to a hawk. we quickly got a top on our pen. the hens seem traumatized by the move to our home and the loss of our hen. we haven't gotten eggs yet. I have read about food sources, water, and light but am curious to know, what is a reasonable amount of time until i should be concerned about the hens? they have only been with us for a week.