We have an Easter Egger - Am/RIR cross, 3-4 mo, unknown exact weight but small. She is breathing heavy with her beak open, very lethargic, not opening eyes and her eyes are glassy/cloudy. She was fairly active yesterday, but last night when we came home she wasn't moving around much, she was huddled up with her eyes closed. This morning it was a completely different story, not moving around at all. We had one with the same symptoms yesterday morning. We lost the bird last night. We had 4 birds, the other two do not currently appear to have any symptoms. She does not have any bleeding, traumas or injuries. We have been using Layena w/ Omega 3, and water is always available. We have separated her, and gave her food and water. She has not eaten or drank since we separated her. We would like to do everything possible to help her or at least prevent our other birds from getting sick. The other 2 birds are housed in our small chicken coop. It is big enough for about 6 birds with pine bedding and we recently added DE. Any advice would be greatly appreciated. Thank you.