I just began with baby chicks (a variety of breeds) about a month ago. My husband built a wonderful large coop for them. The chicks have grown so very quickly. Do they need grit with their feed or is the feed already grit enough? Also, do you recommend using any special way to get the chicks to go into the nesting boxes or the enclosed area? I know they are not ready to lay eggs yet, but I want them to get use to the area. We have a ladder that leads to the boxes and enclosed area, and they are using the ladder but they will not go into the box area. Thank you in advance for any advice.