Do these eggs look like they should ?

[Michael8427]

My friend has ducks and he knows I just got into them and I’ve been wanting to incubate my own eggs but none of my are old enough yet and he told me that he found some that are new at the bottom of their pond maybe a couple days old and he wasn’t sure if they were fertile but he said even if they weren’t they would be good to test everything out with, so it’s day 5 and I’m not sure what to look for , there is 5 eggs and each egg has three pictures so if anyone wouldn’t mind telling me what you think , if they will hatch or not , thank you ! (All 3 pictures of each are together)

 

[Cecisflock]

2,4,5th look good don't know abt the others...

 

[Michael8427]

2,4,5th look good don't know abt the others...

Everything I googled said I should see blood vessels, is this different with ducks ? And okay thank you !

 

[Cecisflock]

Everything I googled said I should see blood vessels, is this different with ducks ? And okay thank you !

would you see blood vessels so early? I need a refresher let me check

 

[Michael8427]

would you see blood vessels so early? I need a refresher let me check

I’m honestly not sure but okay!

 

[sassychickens76]

When is/was hatch day?