Why Do Some Eggs Have Blood Spots?
A common misconception is that blood spots mean an egg was fertilized. This is not true.
Blood spots form when tiny blood vessels in the hen’s ovaries or oviduct rupture during egg formation.
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If the spot is on the yolk, the bleeding happened when the egg was released from the follicle.
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If it appears in the egg white, the bleeding occurred after the yolk entered the oviduct.
