We noticed this yesterday but it seems to be a little worse today. We are having a lot and a lot of rain and there are tons and tons of flies so we're wondering if it could be flies bothering her? We have three coops and runs because we have discovered RIR's are bullies. She is in a run that has two americana's, 3 Buffs, a White Leghorn and another Sicilian buttercup like she is. If it isn't fly bites could you please give us an idea of what it is? I'm going to be posting another question under I believe Coop maintenance or something like that because we've had so much rain I need to figure out how to deal with all the water because our runs are in puddles and we don't know what to put down to keep their runs dry.