We are having a very cold winter, and one of my worries has been for our chickens. I have been fearful that they would come down with bronchitis, apparently quite common and would not survive. I am also concerned for Jill as she has "scaly red mite" on her feet and it is getting worse. I have bought this book and done some research on the Internet and it suggests the best cure is to plaster Vaseline all over their feet, which suffocates the mites. Today we started the treatment and will have to re-apply once a week for about 3 weeks.