Two chicks developing in one egg?

[Savanamarksbary]

This egg is on day 9 of incubation and it appears that there could be 2. Am I seeing things? The egg is no larger than the other bantam eggs in the incubator but they are not as far along so it’s hard to compare them.

 

[MysteryChicken]

I've been tricked before, sometimes you'll have an embryo stretched out, with butt on one end, & head on the other.
It makes it look like two, but there's actually one inside.