just like any bird, it grows up inside the shell then it pecks its way out. if its easier for you to think of it this way, think of it as a chicken egg. Its basicaly the same process, only the egg is smaller.
Lia Sophia
Robin eggs do not get bigger in diameter if that is the question. The incubation time for a Robin chick in the egg is 12-14 days.
I think the bird in dies. I had found a robins egg once that had a dead baby robin in it.
It is a bluish turqoise, very lightly dotted it is terqoise with speckles
A robin lays a small blue round egg. If you have found one on the ground don't pick it up because then the robin won't take care of it. It's important to remember that birds can smell human scent!
The plural of robin is robins.
yes they do...I think
robins are brown and red
No. Robins are not dangerous.
Robin.
robins move by flying
yes you can hatch a robins egg under a hen because i tried it once and it worked but the hen and the robin don't get along very well