My white rock hatched 3 chicks 5 days ago. I moved her inside with the chicks as it is starting to get cold here at night. I have her in a heated box with the chicks with access to food and water. Howevever, since yesterday, the hen will not allow me to replace the water in the chicks dish or to fI'll their feeder. Every time I approach the box she jumps up and pecks at me. I am worried that the Babies will become dehydrated if they cant access water. They are too small to climb out of the box to feed with their mother. I am considering seperating her from three chicks and raising them by hand. Can anyone advise?