@Prairie Fleur I've had hypoglycemia my entire life and so has all the females in my family. My mother was the worst and had actually nearly died from it dropping too low. In my case, I do much better without eating much becausey starchy or sugary foods will make my blood sugar peak really fast, and then it dumps and it gets so low it becomes life threatening. There's been more than once when I had to eat breakfast for a blood sugar test and it peaked then dumped just about the time they drew blood. I've had a doctor call asking if I was alright and where was I so her could send an ambulance after they tested my blood and it was critically low.
If my blood sugar dumps too low I don't feel good for a couple days. It has a hard time stabilizing.
I found that eating something like fruit or even some veggies keeps it the most level. Also eating meat or other protein sources help a lot. The doctors have recommended orange juice in an emergency to me. But orange juice is too acid for my stomach. I have those little Cuties (Mandarin oranges) skinned and divided and in my freezer so I can grab a couple of them in a hurry. I also keep frozen grapes which are delicious for the same reason.
I apologize to all of you for not being on here and posting. My sister had a terrible accident and I have been trying to take trips to KU med for her surgeries and also trying to get my own work done. I've been trying to sell a good deal of my flock and tons of chicks. I have to have lumbar spinal surgery and I won't be able to care for the birds for a few months. My sister who got injured was going to help do that for me. But she has a lot more to deal with than I for sure.
I stopped hatching chicks except for Jubilee and Breda chicks cause I still have people wanting those. I have been hatching a ton of geese and shipping them to their new homes, and now I've started hatching the peafowl.
@Plinky could you take a picture of your hen's bottom as it is and also of her missing feathers. Maybe even a picture of her poop.
I suspect she is suffering from mites or lice. They make them very anemic and the pale comb could be a sign of that. As far as worms go the only time you see worms in the poop is if they are dead or the lining of their intestine is sloughing off. With the exception of things like tape worms that have segments in their poop. But tape worm is said to be rare. Free range chickens are more likely to get infected by them.
When I am treating an unknown problem I work from the outside in. The skin and feathers are clues to what is going on.