Muscovy duck hatching help!

[Missmuscovy]

I can hear my Muscovy duckling chirping and tapping on the egg... it’s been 40 hours and there is still no crack.. should I be worried? What should I do?? (Incubator process)

 

[Pyxis]

After 40 hours, I'd personally be putting in a safety hole, as detailed in this article I wrote:

https://www.backyardchickens.com/articles/guide-to-assisted-hatching-for-all-poultry.72886/

 

[chx3to10]

40 hours since...? Muscovy hatch at 35 days unlike all other ducks who hatch at 28 days. Curious as to how this works out for you! I've got a mix of eggs from Cayuga and muscovy, waiting to see what what I end up with-cross breeds supposedly hatch at 32