From my polish hen

[RyderTheChicken]

This egg is really small and I am wondering if this is normal

 

[Kiki]

Is she a new layer?

 

[RyderTheChicken]

She is the oldest one about 3-4 years

 

[Kiki]

People like to call these fart eggs. They are usually more common in young new layers but can happen anytime.

I wouldn't worry about it.

 

[aart]

What was inside that tiny egg...pics?

Fairy, fart, wind, rooster eggs are usually from a tiny piece of tissue breaking loose from the reproductive tract, or an immature ova(yolk) and the body forms an egg around it. Color can be darker than 'normal' as the pigment coating released has to cover a much smaller area so is thicker. Can happen with any age layer, but more common with new or older layers.

I think it's explained in this excellent video, which is worth watching regardless:

 

[moniquem]

That was very informative! Thanks!