Chicken eggs contain other eggs inside

Abnormal activity of the ovaries and sudden contractions may cause " egg-egg" phenomenon .

A farmer named Gary in Texas, USA, found a particularly large egg on his farm. Suspicious of having an unusual thing inside, Gary returned to the scene of an egg beating and found another complete egg nested inside, according to the IFL Science on September 14.

Unusual chicken eggs contain another complete chicken egg inside.(Video: IFL Science).

Gary said the egg was born by a 7-month-old hen named Gertrude on the farm. The egg is twice the size of normal. Gary had many cases of chicken eggs with two yolks, but this was the first time he spotted an egg containing another complete egg inside.

"Egg nest egg" is a very rare phenomenon. The cause is due to abnormal activity of the ovaries and disorders of muscle contraction activity in the chicken body.

Typically, oocyte (later becoming egg yolk) is released from the ovary and continues to complete the layers of the fallopian tube. However, due to ovarian activity, another oocyte is released before the first egg is laid.

"Egg nest egg" is a very rare phenomenon.

During this stage, a certain agent suddenly agitated the nervous system, causing the chicken to panic, leading to sudden contractions. As a result, the first egg after being completed instead of being laid will be reversed, returning to egg production. It will combine with the released oocyte soon to form an egg containing other yolks and eggs inside.