My Sussex hen, is otherwise healthy: eating well, exploring garden, hanging out with it's companion (a black/grey speckled hen) and laying an egg five times out of seven, and yet for three days on the run, I've gone out to shut the perch hatch and lock the run door, to find the sussex lying hunkered down on the ground. I've had four hens in the last four months: I initially got the sussex and it's long-term companion: a brown hen. The brown hen died after about 8 weeks: it had a dirty bottom and couldn't get up to it's perch. I took it to the vet but it died a few days later. I then acquired two 'rescue' hens from a hen sanctuary: a black one and this speckled one. After about two weeks, the black one wouldn't come out of the perching area and wasn't perky (I had to shoo it out). It couldn't get up into the perching house and went down hill fast, so I took it back to where I got it from. That left me with the sussex and the speckled one. They are both healthy, eat well, strutt around and scratch etc. The speckled one hasn't laid any eggs yet. Yet again, tonight, the sussex was down on the ground and yet it's been fine all day, eating, walking around etc. It's the dominant one and gets the food first (pellets, bit of grain). It's comb is nice and red so why can't it get up into it's house? It's bottom is clean. I'm worried it's going to go like the other two. The hens have the bottom of my garden which is half woodbark and half lawn, so they've got a big space to forage in. I give them grit regularly too! Any help would be most appreciated. P.S, I usually lock the hens away as soon as it gets dark. Sometimes I might be late locking the door, (if I've had to go out) but I haven't worried because they both fly up when it's dusk. I've been late locking up the last few days, as my dad's been unwell and I've got home late only to find the sussex still in the pen area, nestled down into the ground.