HELP! Here's the story, we had a clutch of 5 duck eggs and a hen brooding on them. 4 ducklings hatched and the other egg is quite small. It was very active within the shell when I checked it and then put it back under the hen. The next day it had still not hatched but the shell was cracked and a beak was half popping out. As these are not our first ducklings we have had hatch we knew to help the duckling so he could breathe as the membrane was very thick. He is still attached to the egg via the (ambillicle cord ?) he doesnt open his eyes and we have been keeping them moist in case they are stuck together. He moves his legs but cannot stand and he lifts his head occasionally. He is taking small amounts of water and mash and loves it. Peeps occasionally aswell. As we do not own an incubator he is in a tub with a heat lamp and we have created a humid environment as good as we can. HELP! What is going on?????