We have a flock of 11 chickens, 4 bantams and the rest are full size, they are all under a year old. We live in phoenix, and I'm not sure if we should give them worm medicine or not? This is our first flock and we are new to having them, we have read books but we aren't sure since nothing really tells you what you should or should not be doing. None of our girls have had worms that we are aware of so we are curious on how to go about it. -What type of worms should we be concerned about? -Our chickens are free range so they sometimes find little worms they dig up and eat < I'm assuming these are just earthworms. Can these be harmful? -What do we use to worm them? -How do we go about worming them? Also is there anything else we should be doing for them besides worming and checking for mites/lice at times?