I started off with 6 chicks, in the past 3 days we have gone down to four. They are just over 2 weeks old. The symptoms were: 12 hours before death: Lethargy, "fluffed" appearance. 6 Hours before death: Lethargy, sleepiness, "fluffed" appearance, complete loss of appetite, lack of interest in surroundings & general weakness. Also noticed crop was quite empty at this point. 1 Hour before death: Increased heart rate, "gasping" Completely lethargic, very weak & noticeable weight loss, no interest at all in surroundings, drooping wings, fluffed appearance, Standing up straight however looking cold as though lacking heat (was moved from brooder to the quarantine incubator at first signs of illness), would not really eat or drink even with assistance. managed to get some water in the second bird, but it vomited it up when it died. I have moved the surviving birds into a large rabbit hutch in the living room. Their previous brooder was only 1ft x 2ft & the water was constantly running dry from the heatlamp. Now their brooder is 2ft x 6ft for four chicks, I have lowered the ceramic heatlamp (gives off zero light, only heat) down one end & provided a larger waterer with vitamins & electrolytes + a larger feeder. They are being fed quail mix. They have spent time outside in a large run the past few days when I have been cleaning them out, we do have chickens roaming nearby, however it is a small backyard flock of 6 birds only aged about 10 weeks in the middle of a town. I'm thinking it may be more the outdoor temps here, the quail are fully feathered aside from their heads but it is about 6 - 7 oC. I thought they were ok though as they didn't huddle or complain much & they had a nesting area to go in. I've never lost a chicken chick, but now I'm starting to realise quail are much more fragile. And yes, I am aware poultry can spread certain diseases to quail & we were going to deal with preventive measures, but these symptoms have appeared long after the quail were exposed to the chickens. The chickens, em, kind of sneak in the house alot & basically the quail chicks were unwillingly exposed from day 1 to chickens. Not my choice, believe me. Especially when the chickens began to view the quail as snack pieces. Any advice?