Is this normal to increase size this much?!?!

[sunnie7]

I thought the first 2 were probably my duck(s) that just started laying within the week. Is it normal for the size to increase this much so soon??? I do have chickens too that I think just one has started laying a couple days ago.

 

[oldhenlikesdogs]

Have you checked it to see if it's a double yolk egg? Those whiter ones do look like duck eggs.