Australorp, exactly 20 weeks old, lives in 4x8 + coup with 7 others (1 other Australorp, 2 RIR, 2BR, 2 Americaunas), started shaking head about 48hrs ago. I wasn't sure if it was a problem when I first noticed it... but now it seems pretty prevalent. I thought I saw nasal drainage, but I think she just took a drink since I saw her a few minutes later high and dry. Eating, drinking, seems active still. We noticed more than a month ago that she has a weird sorta growth (for lack of a better desciption) at about 3-4 o'clock beside left nasal passage. Preliminary pics posted. I have the next 2 days off, so I'll have a little more to say about any other odd behavior and will be able to have DH hold her while I take a decent pic of the nasal passage thing. I'm attempting to link a youtube video of the head shake, but I got home late, so she was already roosting and the twitch is definitely toned down for the night...but its there in the video. not a good pic, but it's what I could get tonight.