My black sex-linked chicken, just past away yesterday. Not even one years of age. A couple of days before she past away; she started acting strange. She would lay down on the cold sand. I call out her name, she would get up and walk around for a couple of minutes, and then go back laying down in the same position and same spot. We did this a couple times. The next morning let the chickens out of their coop. She did the very same thing. Called out her name, she got up and walked around. I went inside my house for an hour and a half. Looking from the window of my house. I see that she is in the same spot again. I called out her name. No sound or movement. I go into the run, her eyes are closed. I called her name again. nothing. This time I nudge her. nothing happen. I lay my hand on her for a minute she was still some what warm, but there is no breathing. I was wondering if anyone had encounter this sort of thing before or have at least an idea of what is could have been? I would like to at least get an idea so if this sort of thing does ever happen again. That I will be better prepared or at least be able to some way help out my chickens.