WOW! This was a very well presented discussion. I have only four adult girls and based on this thread, I've been giving them way to much in the line of treats. I have two auto feeders which contain 17% complete layer feed. And then every day, I provide two pie pans with about two total cups of treats between them, which consist of chopped lettuce, dry cat food, corn and meal worm scratch, sunflower seeds and sprinkle red pepper flakes and dyed and ground up egg shells over the top. Plus a hanging 3" long corn cob. Every day they are let out in a large enclosure and then locked up every evening. We live in the high desert and the ground vegetation is sparse, but there is some which they spend there days in. There are still enjoying dirt baths every day even is our cold winter weather. My main concern in looking into this thread was the amount of calcium which we are feeding them, but I have now come away with a concern that I have been providing two many treats. I would value any advise or suggestions. Thank much.