On day 28, does this look normal?(Duck)

[Faithtenile]

I'm a total newbie and am an over worry-er. Humidity has been staying at 68% +/-1.. temp at 37.5c. day 28. Locked down on 25. Any tips, advice, if it looks wrong, etc. thank you guys Ive tried googling and looking thru threads but I don't see any with that little orange thing in it.. got me a bit worried.

 

[Poultry Showman]

That looks like a dud to me. I know that for chicken eggs, an egg has died if you can see a ring. On the last day you shouldn't be able to see much clearness because the chick will have grown in the egg.

 

[MGG]

I'm a total newbie and am an over worry-er. Humidity has been staying at 68% +/-1.. temp at 37.5c. day 28. Locked down on 25. Any tips, advice, if it looks wrong, etc. thank you guys Ive tried googling and looking thru threads but I don't see any with that little orange thing in it.. got me a bit worried.

Sometimes they get a mark like that at the spot they're trying to pip. Are you still seeing movement? I'd try checking for an internal pip.
Here are a couple pics of what you're looking for. You can see my one egg has that same mark in the second one