About a month ago we received four hens from a neighbor who is transitioning from standard to rare breeds. He doesn't free range, but we decided we'd like to do so after they'd had a chance to bond with their new coop. Everything was working out pretty well until... One of the chickens (Gertrude) died about a week ago. The day before I found a roundworm in one of the eggs. It was like a long white thread. Yuck! (e.g. see http://www.thepoultrysite.com/publications/1/egg-quality-handbook/35/roundworms-in-eggs A combination of factors caused the death of Gertrude, not just worms, but of course now I'd like to de-worm the other chooks (and us too). I'm thinking about using food grade Diatomaceous Earth, and I guess I'll buy a big sack of it e.g. http://wolfcreekranch.net/diatomaceous_earth.html The following website has some ideas that sound good for keeping worms away: http://groups.msn.com/limitedpoultry/aboutwormers.msnw Any other suggestions are welcome. The three remaining hens have had pasty butt for the last few days, so I'm also working on getting rid of that.