i had a hen go broody. so i got sick of dragging her out all the time and got 4 fertile eggs. i stuck them under dec 15th. one survived without being broke. it solid dark when put up to the light, i hope there is a chick alive in there!! hatch time is almost here! should i leave it under the hen till it hatches ? this cold weather country. it was minus 3 the other night. thanks, Buzz