my babies are a little over two weeks old now. We are keeping them in a cage brooder with a heat lamp in our garage. The lamp goes off during day and back on at night. I let them out of the cage while still in the garage during the evening when I'm home to let them run around and to play with them. My question is, is it to early for me to take the whole cage out and set it in the grass to let them have fun pecking and scratching and nibbling at greens? I would superivse these outings of course! Second question is when can I stop having the heat lamp on at night? I worry about these little gals so much -- I'm always afraid I'm going to do the wrong thing and make one ill!