How long does it take for a bird egg to hatch?

my canary recently had a a egg and i wanted to know the avarge time it takes for it to hatch

How long does it take for baby, frog , eggs to hatch found 2 weeks ago?

My bird had 4 eggs.when will she have more eggs?how long does it take to lay more?

how much time does it take for a parakeet eggs to hatch ?????

My parakeets humped and im wundering how long untill it lays an egg? We have naesting box in the cage.

my parakeet has laid an egg and it fell and slightly cracked can it still hach?

my cats have ear mites, can I get some info on it please? how long does it take to get rid of them? can it be passed on to my...

The cage The other bird is a finch and I need to no if my two canaries will have eggs with the finch in the same cage there...

I've found a light blue egg on my lawn what kind of bird does it belong to and should I keep it warm to see if it will hatch?

My eggs have like almost three weeks and a half. They wont hatch. If I cracked them open will there be anything in them?