6 week old hens, multiple "bloated crop" cases - what's wrong?

[CptCluck]

I've got one weak hen and one stong hen both with the same thing... I'll give them a saltine cracker. Hopefully the strong one will let the weak one have some.

A sour crop is only a slow moving crop. Things ARE moving thru her but at a slower rate. The crop is a muscle and a storage compartment for food. It needs to be of a very low ph to keep the food from souring. If you are not adding to the yeasts with sweet type foods, it is good for the crop to keep it moving with food. Without food, the crop CAN completely stop moving.