khkiang

It's amazing to learn that chicken is the offspring of some of the dinosaurs who give brith of some forms of eggs that evolve to become chicken / hen.

Even I re-read the above text again and again to the extent of 100 times. I can't convince myself. How come those great scientists can convince others. That're the other side of their abilities.

Animals give birth of their babies through one of three channels:
1. an exact little animal like its mum. e.g. cats and its kitten.
2. a warm-like small baby, e.g. kangaroo and its joey.
3. an egg, e.g. hens and its eggs.

Animals change the way of give birth in order to full adhere to its best adapability to life.

I am not scientist, but my common sense pushes me to make comment that it is the animal first, not the egg comes first.