Duck egg candling help

[Honor_Fox]

Hi everyone! I am going to attach pictures of my duck eggs. I know that two of them are for sure alive, but I’m not sure about the rest. Let me know what you think.

 

[Weeg]

What day are these eggs on? The last two look much farther along then the first. #4 is infertile, you can toss that. I think #3 may be dead to, but the pics are making it hard to make the call.
Its very hard to see into the eggs with those pis, but don't worry, I've been there.
The best way to get pics is to keep any light from shin gin outside the egg. Then the camera can focus on the egg. Look up DIY candlers, there's good examples on how to use house hold items to make a candler that fits around the egg well.

 

[Humanbean68]

If in doubt, leave them under the duck. mistakenly threw out an egg I thought was dead once and it had an almost fully grown duckling inside. Now I err on the side of caution.