A real shame. (Warning: Graphic photo.)

[Luminide]

I have a really worrying update.
First of all, her last clutch didn't hatch. She eventually stopped sitting for two days, just long enough for them to die.

She's on a new clutch now.
I just got home to find blood trails around the barn. The same duck, it seems, ripped open yet ANOTHER egg with a mostly-formed baby. This one was further along then the last. It seems it was dragged about all over...This time, however, I can't imagine what spurred her to do it. The other ducks leave her alone and I wasn't even around to bother her.

One time almost 6 months ago she did roll and crack one unfertilized egg open...and ate it. I had assumed there was an accident and it had initially cracked due to knocking against something, but...Is it possible that she's breaking them open herself, thinking they're food?

I have two other pekin girls who are brooding on a shared nest across the barn. I took some of the muscovy's eggs and put them under them, and plan to go back for her other eggs in a while.

 

[ringaring]

I have a really worrying update.
First of all, her last clutch didn't hatch. She eventually stopped sitting for two days, just long enough for them to die.

She's on a new clutch now.
I just got home to find blood trails around the barn. The same duck, it seems, ripped open yet ANOTHER egg with a mostly-formed baby. This one was further along then the last. It seems it was dragged about all over...This time, however, I can't imagine what spurred her to do it. The other ducks leave her alone and I wasn't even around to bother her.

One time almost 6 months ago she did roll and crack one unfertilized egg open...and ate it. I had assumed there was an accident and it had initially cracked due to knocking against something, but...Is it possible that she's breaking them open herself, thinking they're food?

I have two other pekin girls who are brooding on a shared nest across the barn. I took some of the muscovy's eggs and put them under them, and plan to go back for her other eggs in a while.

Some ducks, even some Muscovies, are not good Moms or are just too easily spooked. Hopefully her temperament is not passed on to her offspring. If it is, this may not be a line you would want to allow to propagate.

 

[smonkeySK]

I've not seen my ducks trying to break open eggs but they do enjoy the contents!
One or two of my chickens have gotten into the habit of trying to break eggs - but I have a bird that lays weak shells; they only break her eggs and it may not be intentional as they break if you look at them funny!

Sorry your last brood didn't work out. I'd let her have one more crack at sitting, then I'd incubate myself if she was still unsuccessful.