My 6 week old Australorp baby is acting very sick. She is curling her head completely under her, has even lost her balance when trying to move about and did a summersault. I've put her in a box inside the dog kennel brooder she's been living to keep the others from disturbing her while she has the heat lamp on above. I took her out and held her for a while earlier, she perked up for a few minutes afterward, but she's now back to sleeping with her head tucked completely underneath her. Anyone know what this might be, or what to do? I live a long way from the nearest Vet and since it's cold outside today I'm worried about transporting her. Any ideas anyone? Please help!