Old Rooster-
Below are three photos from 'Speckledhen' and her explanation of the three. The first picture is an INfertile egg. The next two are fertile eggs at slightly different stages, but both freshly laid. Usually, you look for the bullseye/donut appearance, but there are different stages of development of even freshly laid eggs and the two last pictures demonstrate that. This is caused by cells in the center of the blastoderm dying off and leaving a cleared out area, making that bullseye appearance.



It really helps to compare it to an infertile egg- so you know what you're looking for.
Have fun!
Below are three photos from 'Speckledhen' and her explanation of the three. The first picture is an INfertile egg. The next two are fertile eggs at slightly different stages, but both freshly laid. Usually, you look for the bullseye/donut appearance, but there are different stages of development of even freshly laid eggs and the two last pictures demonstrate that. This is caused by cells in the center of the blastoderm dying off and leaving a cleared out area, making that bullseye appearance.
It really helps to compare it to an infertile egg- so you know what you're looking for.
Have fun!

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