We used to keep mixed flocks (including silkies) a few years ago and never had a problem with sick chooks. About 2 years ago, we started a small flock of silkies. We have a beautiful warm house (raised with a ramp and two layers of security for predators), they free range during the day in an enclosed orchard and are shut in at night. Their house has fresh hay, nesting boxes, perches and an enclosed mini yard, water system etc.. We started with a little flock of 6 and have had nothing but disaster. Every month or two we seem to lose someone. We had two roos, both died suddenly about 4 months apart. No sign of illness, though one roo had a bit of messy poo at his vent. We lost our largest healthy hen, just suddenly died by the hazelnut as if something had scared her. The other three hens were good, healthy, and happy, but needed a roo. So we bought a lovely roo and two hens (from a reputable breeder) to replenish our flock. That was perhaps 6 months ago. Since then, we have lost our hens one by one, it is heartbreaking. One did not get on with the new roo ( no longer head chook) and became suddenly, obviously wobbly and unwell. We gave her a block for supplement and she improved dramatically- then died a few days later. The new hen seemed unable to see well, she didn't move around as much as the others but ate and drank, we lifted her every night to her house but one night she came down on her own and we found her lying in the yard cold and wet, we brought her inside and warmed her but she did not last the morning. In the past two months our other two original, active and very healthy hens have died one by one, with nothing obviously wrong with them (though one was a bit sluggish for a couple of days and had a bit of poo at her vent - but was moving and eating well). We have only the roo and the other new hen left. They (also) appear healthy and I don't want to lose them! And I would like to get more silkies for the flock but need to know they will be ok.... Can anyone shed some light on what happened to our girls??