Help still now progress

[010priceb]

So my duck egg still hasnt pipped and were well past day 35 now. The duckling is still moving loads when you candle but this morning i noticed like a circular shadow in the airsac close to were it meets the duckling. Is this normal as it wasnt there last night? What can it be? I dont know wether to assist this egg as we estimate that this now is around day 39 (muscovy egg). Also last night when i checked there was a similar coloured shadow in the yolk that looked like a beak.

 

[Not-so-tough Farmer Mama]

The bird has to pip into the air sac before it pips out of the shell, so that's probably what that is definitely a good thing.

 

[010priceb]

Its now day 45 and the has pipped internally it must of been something to do with the cold temperatures outside as its under one of the females