What causes Infertile eggs to have bulls eye?

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TherryChicken

TherryChicken

Crowing
7 Years
Sep 16, 2012
5,380
196
253
del valle, tx
I'm curious what causes this. I've had it in the past, but never got an answer. I had no rooster with them and no rooster around them in the fertility time frame. What causes perfect bulls eye without a rooster? I tried incubating for the heck of it, knowing nothing will happen and it didnt.
 
TherryChicken said:
I'm curious what causes this. I've had it in the past, but never got an answer. I had no rooster with them and no rooster around them in the fertility time frame. What causes perfect bulls eye without a rooster? I tried incubating for the heck of it, knowing nothing will happen and it didnt.
Click to expand...
What was your "fertility time frame"?
They can remain fertile for up to about a month after no exposure to a cock/erel.

I remember a discussion on this, but only recall that it is possible for an infertile egg to have the bullseye but not what causes it. Bummed me out from a hatching aspect.
 
aart said:
What was your "fertility time frame"?
They can remain fertile for up to about a month after no exposure to a cock/erel.

I remember a discussion on this, but only recall that it is possible for an infertile egg to have the bullseye but not what causes it. Bummed me out from a hatching aspect.
Click to expand...

Yes, I made a thread a couple years ago about it too. And the time frame of fertilization after roos. I never had a roo so there could be no time frame if that makes sence.
 

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