I had six, now five duck eggs that i know are fertile cause i can see the little wiggling babies. I candle test about every other day. Is that to much? Its now there 9th day in the incubator. The first one was either infertile or dead becasaue it did not grow...it just had a red vein in a circle. I will be getting 30+ button uial eggs. Can i candle test them? is it harder or easier than duck eggs. one more ?. if the remaining 5 duck eggs have babies in them, how likely are they to hatch? thanks