My first baby duckling hatched with my help today, he pipped on his own yesterday morning on the opposite end of the air pocket, ive left him until about 4pm today until i helped him out of the shell, the blood vessels have been absorbed and his bottom half is still in the egg. However he has some yolk sack still unabsorbed, about the size of a kidney bean.. Hes chirping every now and then but hes just laying on his back. He tries to kick the egg off every now and then. He's breathing normally he just seems either really tired (understandably) or weak. He wont take any water drops. Do i leave the sack to dry or keep it moist? Some people say cut it off but i wouldnt feel confident doing that... Help?