>>> The egg.
I don't think the answer is that clear cut, black/white fallacy, since
there was probably a bunch of hatchings and creatures and hatchings of
animals that were slowly becoming like chickens. Lest you make it
sound like some other creature hatched a "chicken egg"
http://www.news.com.au/story/0,23599,21903015-401,00.html
Oviparous animals are animals that lay eggs, with little or no other
embryonic development within the mother. This is the reproductive
method of most fish, amphibians and reptiles, all birds, the
monotremes, and most insects and arachnids.
Land-dwelling animals that lay eggs, often protected by a shell, such
as reptiles and insects, do so after having completed the process of
internal fertilization. Water-dwelling animals, such as fish and
amphibians, lay their eggs before fertilization, and the male lays its
sperm on top of the newly laid eggs in a process called external
fertilization.
http://en.wikipedia.org/wiki/Oviparous
