(The shine on some of the pictures is Neosporin.) The chickens are americaunas and are about 3 years old. We just noticed the problem yesterday when the first chicken was shaking her head. Otherwise they seem healthy and are eating and drinking normally. We have quarantined these 2 and are watching the rest of the flock carefully. There are about 25 chickens in this coop. We have 2 other coops that have no symptoms. Any help is much appreciated. Thank you.