Here's a pic....
The crop should be in the red zone, or right about. If it is even the slightest bit full you should be able to feel something squishy there....I don't know if that is indeed the problem (never had chickens molt, so don't know nuthin about that) but just so you know where the crop is for future reference....

The crop should be in the red zone, or right about. If it is even the slightest bit full you should be able to feel something squishy there....I don't know if that is indeed the problem (never had chickens molt, so don't know nuthin about that) but just so you know where the crop is for future reference....