Thank you so much for replying. I was giving her water yesterday via a syringe, she wasn't keen in the morning but seemed thirsty by the afternoon. She has has quite a lot of water herself this morning.
Her crop I would say is quite hard, I feel like her crop always sort of feels fairly hard because is usually quite a guts, but I've never really felt in first up in the morning. I wasn't able to buy calcium when I got the electrolytes but I gave her an egg yesterday with an entire shells crushed up in it. She ate it all up. Thats all I could think of.
I'm wondering is it possible the limp is a secondary symptom to something else more serious?[/QUOTE]
Crop issues are often a symptom of an underlying condition - reproductive problems, infection, worms, coccidiosis, etc.
I would work on the crop. She needs to be drinking, but I would not worry about food at this time.
Since it smells bad, she has sour crop. I would first start with offering 1 teaspoon of coconut oil and massage the crop. She can have water, but withhold food. (she probably doesn't really want to eat anyway). Massage the crop several times a day to see if you can get the crop moving.
She probably will need an anti-fungal as well, coconut oil can help, but if the crop is really yeasty then ask your vet for some Nystatin or you can use vaginal cream as instructed in the following links.
The only time I have ever had a crop issue, the hen also had a reproductive problem (underlying condition). Inflammation and/or infection elsewhere in the body can press upon internal organs, intestines and slow the digestive process. It is a very good idea that you re-feel of her for bloat/swelling or fluid in the abdomen. Egg matter, masses, internal laying, cancer, tumors, etc. can press upon nerves and cause limping - it's possible that's why she's limping instead of the Bumblefoot.
Keep watch on the Bumblefoot as well to see that the foot is healing well.
The only way to accurately check a crop function is to feel it first thing in the morning before the bird has has anything to eat/drink.
Keep us posted on her progress.
http://www.backyardchickens.com/a/impacted-slow-and-sour-crops-prevention-and-treatments
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/