I noticed today 6 out of 11 eggs have pipped since yesterday. Eggs aren't due until about next Monday. They are under our lovely Muscovy duck "Pip" and this is her second hatch. First one was in October and she had 4 out of 6 eggs hatch at about day 36-37. I thought we must be a week out with our dates so double checked the calender and she has defintely only being on them for about 28-30 days. She definately layed her last in the clutch exactly 30 days ago as I had been keeping an eye on her so I knew when to starting counting. Can extreme heat make them develop early? It is summer here in Australia and over the past month we have had temps ranging from as low as 21 degrees celcius up to 44 degrees celcius. I'm so use to incubating quail and chicken eggs that I find natural incubation makes me nervous. Also, I think one has definately died late as egg has developed big dark patch. This happen to remaing two out of the 6 last hatch around time of pipping and when cracked they were fully formed ducklings that had died in the shell without pipping. I read infection from chooks can cause this???? And should I remove the dark patchy egg? Very tempted too given the result last time as I would hate it to infect any of the others, but there's that thought of 'what if it hasn't died' and given they seem to be a week early....???? Looking forward to some advice and reassurance.