Ok, my little serama babies scrape their beaks on the ground constantly. Does this "mean" anything or is it just something they do?
Means you didn't give them napkins after they ate! Seriously, that's the way they wipe food off the sides of their beaks.
Right now my shirt has sour cream all over it from a treat I hand-fed a girl in my lap. Yup, the World's Biggest Napkin.