Hey! So I have a four year old breeding pair of Indian fantails and about ( roughly ) 20 days ago they laid an egg. Both sit on it around the clock however it still hasn't hatched when it was supposed to on Monday?
I cleaned them today so took the egg out, and when I moved it you could feel a baby chick shaking inside ( I didn't shake it on purpose or anything).
Do eggs sometimes take longer than 18 days to hatch?
Or is there a way to tell if it is fertilized?
( the pair have been mates for over a year)
* I'm also concerned the egg is too small, it's about the size of an oval ping pong ball, and squabs seem to be so large