I keep finding spattered bits of blood on some of the walls near the roost area in my coop. I also found some on the perches. Not a tonne...but it seems consistent that a few splotches appear every few days or so. All of the chooks look fine....and i regularly examine the only two docile birds as they're the 'low chooks' on the totem pole. the others i can't really examine. should i be concerned?