Discolored duck eggs?

[lilnuggets]

My duck is sitting on a clutch of 14 eggs and one on the is becoming severally discolored. I noticed it yesterday and the crack is new as of today. She has been sitting on them for about a week now. Any idea what causes the discoloration?

 

[Pyxis]

Have you candled that? I would be worried that it's a bad egg.

 

[lilnuggets]

Have you candled that? I would be worried that it's a bad egg.

Yes I have but it's too dark to see much and I'm new at this so I'm not really sure what too look for other than movement. Which there was none in this one

 

[Pyxis]

Yes I have but it's too dark to see much and I'm new at this so I'm not really sure what too look for other than movement. Which there was none in this one

Can you candle with a bright flashlight and post a picture? I may be able to help with whether it's alive or not

 

[lilnuggets]

Can you candle with a bright flashlight and post a picture? I may be able to help with whether it's alive or not

Here are some pictures. Is it possible it is rotting? It smells kinda funky but not like rot..yet?

 

[C3 mommy]

Looks like ones I found under my parents ducks, they had like greyish sludge in them.

 

[lilnuggets]

Looks like ones I found under my parents ducks, they had like greyish sludge in them.

Hmm maybe I'll crack it open in a few days. Pretty sure it's not alive but I'll give it a few more days to make sure

 

[C3 mommy]

Yea probably good idea to make sure!

 

[Punkybrewster]

May not want to leave that under her. It looks bad inside and you said its cracked.
It could taint all the good eggs if it leaks or explodes.

 

[lilnuggets]

Figured I would post an update. I had the hubby crack this egg open last night it was straight rotted an full of a dark green sludge with a horrible smell.