Egg Float Test -- Can Rotten Eggs Float Similar to About-to-Hatch Eggs?

[BettyGoosie]

I have some eggs that are significantly overdue. It's not an issue about what to do with them, but I did run a float test on them to see what they would do, and I'm confused by the result.

The eggs float with the larger side up, vertically, about 25-30% of the egg above the surface, with a slight tilt. These are goose eggs. It looks like wehat I've read and seen is supposed to happen when you have a fully developed chick or gosling in there. No rocking seen, but then I know they're way past due, so I would've been surprised to see that.

I thought an egg well past due date would float sideways, almost on top of the water.

All 6 eggs did this. Is it possible for rotten eggs to float like a good egg? Then I'm not sure what validity the float test can have if they can be mistaken for each other. Wondering if I'm missing some important point here.

Thanks.

 

[Pyxis]

Live eggs wiggle in the water and you can see them move. I know that rotten eggs also float, but they don't wiggle. When you candle are you seeing blood vessels? How overdue are they? I had one go to day 39 before doing anything.

 

[Lizz9311]

I'm on day 24 of chicken eggs. Did the float test as well on day 22 with the same result. I'm so doubting the float test now. Though I've heard of chicks hatching a week late. So confused!

I guess what I'm saying is you're not alone.