Why is my chicken getting sour crop?

[Quacking ducks]

I have one hen that keeps developing sour crop, but I can’t figure out why I have 6 other hens, and they have never gotten it and this is the second time my chicken “Snuggles” has gotten it. Why is it only Snuggle getting it? How do I prevent it? Thank you

 

[EggSighted4Life]

I have one hen that keeps developing sour crop

Looks like it's hanfing pretty low, might be pendulous??

Does this article help at all, it has a section on that..

https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/