Today is day 29 for my duck eggs. I had a problem keeping the temp up in my incubator, so it was around 98.9 to 99.3 F the whole time. I upped the humidity to around 75-80% on day 25. I saw one egg had got that bruising I've read about, so I took it out, candled, saw now movement and it didn't look right. I opened it and the fully formed duckling was dead with no internal pip and a big external yolk. One duckling has pipped, which I noticed this morning. There are 5 more eggs that I don't see pips on. About how long after the 28 days until I should check the other five if they don't pip/hatch? First time hatching duck eggs, although I've hatched a lot of chickens.