Hi everyone! Our flock of about 30 has been sneezing and has runny noses. They don't act "sick", like some hens tend to when they aren't feeling well (e.g. standing around, looking off blankly, being standoffish). We've used the general antibiotic, tetracycline, but it doesn't seem to help. Any suggestions? A farmer that we buy our chickens from said that when his flock was sneezing, it was because of elongated mites or something like that, that get into the birds' sinuses. I haven't asked him what it was yet, but does anyone know? I'm trying to do some research, but I thought this would be a good place to ask. Thanks!