One of my chickens is ill... Blondie, the almost 1yo shy Buff Orpington with the tiny pinkish comb is thin, lethargic, and favoring her left foot, and has barely moved in the past two days. She has always hung back when I'm giving out treats, and has never done the 'egg squat' so I've never been able to handle her until she started acting more calm and sleepy a week or two ago, so I have no idea if she's always been thin (her feathers make her appear deceptively large) but she seems to have gotten skinnier this past week and is very weak and uncannily relaxed about being handled and examined. No apparent injury to her foot or leg, but she won't stand or walk correctly, and when sitting she doesn't use that foot to support her. She didn't go to roost last night, and this afternoon was (still?) on the roost where I had put her. She ate mealworms when I gave them to her, and drank when I held her in front of the waterer, and ate a few damp pellets when I put her in front of the feeder, but then lost interest after a nibble or two, and just seemed interested in napping. Her crop is so empty I can't feel it... So after work tonight she was under the coop instead of roosting in it again, and seems to have even less energy, I don't think she has been moving or eating or drinking all day. So I've rigged up a mini waterer and mixed up some feed mash, and she's in a little critter carrier in the spare room, and when I check on her she nibbles on her mash, so maybe she will gain some strength and be able to beat whatever is affecting her? My current gamut of theories are: anemia from mites (DE/sand/ wood ash mix is available in a covered kitty litter pan, but I've never seen her use it, saw a couple tiny moving specks when examining her so I dusted her in it,) possibly internal parasites (not wormed yet,) egg bound (was MAYBE laying Jan-feb, or may not have ever layed?) (her comb and waddles are tiny ((1/3 size of sisters)) and have never been red so maybe she hasn't entered puberty, which seems SUPER odd since she's almost 1 year?), hypercalcemia/kidney damage from being on layer pellets while not laying, bumblefoot (although no apparent sore, there is a small area on her foot which appeared the slightest bit pink,) Mareks? Can anyone help narrow it down?? And suggest a course of action that doesn't involve an unaffordable vet bill?