Egg age?

[Amethystkytten]

Ok totally new to hatching in general! First of all I no clue the age of the eggs but when candeled you can see the spots where the embryos are if that makes any sense? Is there a way I can tell how old the eggs are or aprox when they were layed

 

[Mum]

Welcome

You could try looking at this page (located in the "Duck Stickies" topic at the very top of the Duck forum page) https://www.backyardchickens.com/t/491013/goose-incubation-hatching-guide-completed and compare what you are seeing with the pictures posted there.