What is the dark red spot occasionally found in an egg?
This is a blood spot; it’s caused by the rupture of a blood vessel in the hen when the egg is forming. This is a natural occurrence and the hen is not harmed when it happens. Though eggs with blood spots are normally removed during the inspection and grading process, occasionally they may slip by undetected and end up in a carton. During grading, the eggs are passed over a bright light that makes it possible to see the insides of the eggs. It is harder to see the contents of brown eggs through the brown shell so blood spots in brown eggs are sometimes not noticed during grading. This is why blood spots may be more frequently found in brown eggs.
