Shamique, my 3 month old black australorp hen has had a dirty, muddy beak with sand, and stuff sticking to it for a day or two. Today I noticed mucous/saliva on her beak while she was eating her treats (boss). She wipes her beak on hard surfaces to clean it off. Is this something I should be concerned with? She is otherwise acting normal, as are her sisters, none of which has similar symptoms. The weather has gone from warm to cool in the past couple of days; we are in southern AZ.