Bantam lays small egg

[dr1939]

What would cause a bantam to suddenly lay a small egg like this? The larger one is the normal size.

 

[ChickenCanoe]

It may be a wind egg (sans yolk). That happens from time to time with all chickens.

 

[PSJ]

It may be a wind egg (sans yolk). That happens from time to time with all chickens.

x 2. nothing to worry about