continuosly pecking at themselves?! Help

[ballybayboy]

hi, i have 5 red stars and allow them to free range around my garden. When they arent looking for worms etc they are always sticking their beaks inside their feathers and shaking their head really fast as if their pecking at something. Is this feather pecking or are there mites or something crawling around them? Please help

 

[ChickDaze]

they sound like mine when they go after dried mealworms and termites, minus the feather part. if you can, look on them and see if you see anything crawling,or so i am told.