2 Birds dead in 4 days...not a happy Mothers Day! First one, I just found her....didnt notice anything wrong until I found her...Last night I heard my sikie hen making some weird noises so I went out and whachted her...she would shake her head and "cough or sneeze"..I assume??? Not bloody poop...after looking at both bodies arter death..no junk from the mouth eyes or around face...Im clueless...now I have 2 more "acting" sick...shaking their heads, holding thier heads low...but have seen them drink and eating a lil. I have added Apple cider Vinegar to all waterers. I have over 50 birds and need to get this under control....Any help is appreciated!