OK, the head will be tucked up under the wing and perhaps has already started swelling which would be why it hasn't pulled the beak up yet. Try to find the part of the chick that is bulging out the most and the head will be juct to the side, counter clockwise. Wet the membrane, check for veins, tear a little and see if you can locate the head and pull it out withou causing blood. If it bleeds stop immediately, wait 10 minutes then try again....