how can you tell if a egg is fertilized

[clairegareth]

I was just wondering how you could tell if an egg is fertilized and when would be the best time to try hatching some

 

[ChickenCanoe]

There's a good picture on this page.

https://www.backyardchickens.com/t/693812/the-old-folks-home/8660

If not fertile the blastoderm will be a solid whitish dot rather than a halo.

 

[clairegareth]

Ok cool thanks,,,someone told me a white dot and as I had been seeing that on everyone I got a bit confused but that's great thanks