Many of us love to encourage birds to our gardens. One of the best ways of doing this is to provide a vast assortment of native plants. Of course, many of us supplement this with bird feeders. We get excited to fill the feeders and watch out feathered friends visit them, but we often neglect the most important thing, to keep your bird feeders clean to avoid the spread of disease. Mycoplasmal conjunctivitis Biologists have noticed birds called house finches with swollen, crust