Spot with dark circle on top of Muscovy Eggs. **Pics Included**

[kuntrygirl]

I noticed that some of my muscovy duck eggs have a spot with a dark circle around the larger end of the egg (not the pointed end). Does anyone know what this could mean? Could it mean that the eggs aren't fertile? I have never seen this before on any of my duck eggs. I collect my eggs every day. Any information would be great.

These are not the best of pics but I hope that you can see the darkish circle on the top of the eggs.

 

[treldib]

Air pocket. Its normal

 

[kuntrygirl]

Thanks for the speedy replytreldib. I was getting nervous being as though after all these years, I never noticed these circles. I thought maybe this was a sign that they were not fertile.

 

[Boggy Bottom Bantams]

yep, That's all it is, the aircell, most all duck eggs show it, especially the ligther shelled ones.