Amniotic Egg- Robin's Egg

Amniotic Egg- 4:00 p.m., August 1^st, on the ground by a tree in my yard. An amniotic egg is the type of egg produced by reptiles, birds, and protherion (egg laying) mammals in which the embryo develops inside an amnion. Shell is leathery or calcium based. This robin’s egg is classified as an amniotic egg because a bird produced it and is calcium based.