For over a year now I have wanted some chickens. Well, the 2nd weekend in June I got 6 hens. Crosses between a Rhode Island red and White Leghorn. I love my chickens!! My husband and son built me a moveable coop and pen. Every couple of days we move it to a new area of lawn. I have some questions I'm sure you will all be able to help me with. #1. How much oyster shell am I supposed to give them? #2. How big is the grit they are supposed to have? And how much? #3. Can I just buy sand from the Home Depot for their grit? #4. What is 'scratch'? #5. Do they need a roost in their coop? My husband didn't build one in ours. #6. When do they start laying? I know these are pretty simple questions- but this is my first time having chickens. I sure appreciate all the help I can get!!!