I have 10 hens, all just about a year old. Since day one, the 3 speckled sussex hens have had poop issues. In every other way, they all seem healthy, eat, drink, lay regularly, etc. The ss hens have a tendancy to have VERY liquid poop that often gets squirted more than dropped. Sometimes it is completely water, sometimes, watery with bits of feed, sometimes diarrhea, sometimes just very loose stool and on rare occasions it is normal. The other hens in the flock are Buff Orpingtons and have no problems or "irregularity". I don't know if its something with the Speckled Sussex breed or what, I have treated for cocci in the past and wormed etc, no changes. Its always been a mystery.