i have 10 girls who i have had for over a year now and they have been doing well ( except a feather picking problem) but i have been wondering if i should worm them and dust them on a regular basis because i fear that they may have worms or mites. i have never dusted them with chemical before and i was wondering if i should because more than a few times i have seen a little bug crawling on one of my girls but just asumed that they picked it up outside and would just jump off of them. if i should dust them should i do it on a regular basis? and what product should i use? and also i see my girls flicking their head alot i know chickens do this sometime but how often should they flick their heads until you feel that they have a problem? and also worms, i was also wondering if i should be concerned about worms because i have also never wormed them before and i was wondering if i should also do this on a regulaar basis and also what product should i use? i know i have alot of questions but any help or advice would be greatly appreciated.