Hen stopped laying, thin and lethargic

[ambergds]

My 9 month old EE hasn't layed and egg for a few weeks and was acting a little more tired then normal. So I picked her up and did a general chicken check over. He crop has food in it but isn't full. She is very thin, I can feel her keel bone well and she is very light. I have seen her drink. Her comb is red, but I've seen it redder. Everything else seems fine, abdomen is not swollen, vent looks normal, can not feel a stuck egg. I gave her a dose of valbazen even though she was wormed in October. No change. I'm thinking of doing a round of corrid just in case. Anything else I can try?
I just went to check on her and she is roosting underneath a big puffy Orpington to stay warm. I'm afraid I'm going to lose her if she doesn't put some weight on.

She's on the far left and back behind a LO

 

[Eggcessive]

Can you take in a few fresh droppings to a vet to test? Offer her some bits of egg, and you can add some water and a bit of yogurt to some chicken feed to see if she is eating okay. Chickens need 12 hours of daylight to lay well, and in the winter, I will put a light on a timer from 5 AM to daylight to add a few more hours of light. Then mine go into the coop at dusk normally, and go to roost. Check her crop in the morning to make sure it empties overnight.

 

[ambergds]

Yes I can take some droppings in. It's $25 at the vets close to me and they have both admitted to not knowing chickens that well. There is two exotic vets, one is about 30 minute drive and $35, and the other refused to do a fecal float unless I brought the chicken in and paid $75 office visit. Since I know where she roosted tonight, it should be easy to identify her droppings on the board. I just need to decide who to take then too, and if I can trust their findings.

I'm not too concerned with her not laying eggs. I'm getting plenty from my other hens. I am concerned with her weight and lethargy.

Thanks for helping me! I'll try your suggestions.