Home made incubators

[Zhuley]

Hello everyone my name is Zuliehat, am currently running a project with my niece to see if we can hatch eggs with recycled materials we on day 7 and when I candled the eggs am seeing something not quite sure what it means please can anyone explain it. Thank you
Something similar to the picture below just a little darker. Please what could be causing it.

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[Redchels]

I can’t see close enough and the page won’t let me click on it.

 

[Zhuley]

Alright I'll describe what I see when I candled the eggs, I saw not a dark ring of blood but opposite the chick developing is a DLA kind of thick dark substance inside , maybe like a blood clot but no ring

 

[Zhuley]

Something similar to this

 

[Laura_BelgianBantams_63]

Welcome Zuliehat!
I'm not sure what is going on in there, but this person might :
@sourland