Crazychickengirl2
Songster
So I know that birds first pip then after awhile they zip. But why can't they just go straight to zip? What takes them so long?
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But why do they make a hole before the yolks not even absorbed?they finish absorbing the yolk
So they can breathe after using up all the Aircell. otherwise, they would suffocate.But why do they make a hole before the yolks not even absorbed?