Sour crop or normal?

[Nuts4FluffyButtsi]

6 birds. Some look larger than others but I’m jot sure if it’s normal

 

[Wyorp Rock]

6 birds. Some look larger than others but I’m jot sure if it’s normal

They can be normal.

Check crops first thing in the morning before they have had anything to eat/drink. If the crops are empty then it's normal.

Not all hens are the same.