Update:
This afternoon, I removed the softened shell hanging from her vent (it came out with some difficulty, and I'm hoping it all came out), massaged the area, and probed with my gloved index finger an inch or so inside her vent to see if there was an egg. Didn't feel anything that felt...
@Eggcessive
Thank you for your advice! I will do that this afternoon.
Would yogurt be considered a good probiotic? Also, if she does get sour crop or some other negative result of rotting food, would an antibiotic from the vet do any good?
After doing a bit of research, I really do think she is eggbound. I read that an impacted crop can actually be the result of being eggbound.
Any suggestions as to how I can help her while I'm waiting to take her to the vet?
A few days ago, one of my hens began to act lethargic. I checked her out the day before yesterday, and discovered she had an impacted crop. It has not improved in two days and I don't think she's eaten much of anything or drank much of anything.
Additionally, she appears to have a sizeable...