What does a live baby sparrow egg look like when it is being candled?

Question

What does a live baby sparrow egg look like when it is being candled?

Answer 1

LEAVE WILD BIRDS AND EGGS ALONE!

If you don't know what a sparrow embryo looks like, you don't really have any business fooling with it.

Chances are excellent you have already killed it.  The parents keep the temperature and humidity exactly right, and you can't do that.

Even if it hatched, you wouldn't know the first thing about feeding and caring for it.  This egg is doomed, and you should never have touched it.

I'm sad your parents didn't teach you any better.

NEVER touch wild bird nests and eggs.  The nest is NOT abandoned, you just scared off the parents. (Even if you didn't see them, they saw you.)  If you just left it alone, it would probably be a healthy little sparrow right now.