Would a chicken egg be considered their menstruation?

Here's why:

* Menstruation is the shedding of the lining of the uterus (womb) in mammals when an egg is not fertilized. This is a part of the menstrual cycle.

* Chickens are birds, and birds do not have uteruses.

* Eggs are produced in the ovaries and are laid through the oviduct, which is a separate organ from the uterus.

The process of egg production in chickens is called oviparity. The egg itself contains the yolk (which provides nourishment for the developing chick) and the white (which provides water and protein).

Essentially, chickens are laying their egg cells, not shedding the lining of their reproductive system like mammals do during menstruation.