I would really like to thank everyone for there well-wishes over our loss of Boo. Our Vet friend did confirm it was a respiratory infection possibly caused by dander, viral, bacteria, fungus, or something else. We now have TWO Pure enrichment air purifiers in the bird room plus we change the heating & air conditioning filters once every two months when 3 is what the filters call for! I flat out ask our vet if we simply had TOO many birds for the area and he said know. He use to raise and sell HUNDREDS at a time. The sad truth of the matter is: if one is going to have large numbers of birds, your eventually GOING to lose some either by what we just went thru, unforeseen injury or problems at birth. I know he meant well but when you get attached to each and every flock member.....it's still tuff to deal with a loss.