We introduced a new hen to our flock of 3 about a month ago, they were on her from the start but gradualy they seemed to get along, (we have no roosters), one of them started to lay our first eggs (a first for all), I went out to check on them yesyerday morning & found the new hen lying dead in the run, she was very healthy before this. My question is, could the other hens have killed her? how do I introduce another hen into the flock w/out causing such a ruckus? any info would be appreciated. Thanks, Butters.