What is amniotic fluid in a chicken egg?

In a chicken egg, the amniotic fluid is a clear liquid that surrounds the developing embryo. It provides a protective environment for the embryo and helps to cushion it from impacts. The amniotic fluid also contains important nutrients and hormones that are essential for the embryo's development.

The amniotic fluid is produced by the embryo's kidneys and is constantly circulated throughout the egg. It is reabsorbed by the embryo's body as it develops. The amount of amniotic fluid in an egg increases as the embryo grows, and it reaches its peak just before the chick hatches.

After the chick hatches, the amniotic fluid is absorbed into the chick's body. The remaining fluid evaporates, leaving the chick with a dry, fluffy coat of feathers.