One of my newly hatched chicks is trailing his shell behind him. It still seems to be attached so I am relunctant to interfere. I put him in the brooder a few hours ago, hoping the heat from the lamp would try it up and it would fall off - but it is still there. The others are hitching a ride on it as he drags it round. Weird. This is my first hatch so I am a bit worried. He is eating and drinking fine. Any thoughts?