It's been almost 24 hours since @WVduckchick saw that one of my eggs was pipping, I read about how sometimes call duck need assistance to hatch. Today is day 24 and I have 6 pipping. How long before any of you would assist a duckling to hatch?
Wait a good 40 hours before you worry about needing to assist, unless it starts to zip part way and then stops. Ducks take longer and rest more than chickens do.