Ugh, awful title, isn't it? No one likes to see a dead chicken, unless you're not veg & it's already cooked & plated. Anyway, this morning one of my 3 Black Copper hens didn't leave the coop to go out with the others. I checked & she was in the nesting box. I figured she was trying to lay, since she hasn't even laid yet, & left her alone. I went back and her head was down, so I got her out & checked her over. Nothing abnormal, except she was SO DOCILE... not the usual "put me down lady... soil to scratch, bugs to eat, things to do" attitude... so I did a little research & checked her croup. It was fluid filled so I vomited her & massaged it in case it was blocked. She pooped green & yellow when I did that. Shortly after she started breathing heavily & developed a fever. I didn't take her temp, but she felt SO HOT. I stuck her in a nice open bath & brought her temp down a bit. I gave her some water with apple cider vinegar & some chick food & left her alone, in a box with lots of pine shavings & a towel over all that even to make her comfortable. I went out to run some errands & when I came back she was stiff & dead. We live on a creek & with all the rain we've been getting lately, the mosquitos have been brutal. We don't have anything dangerous in our yard that she could have "gotten into" so after racking my brain as to how she maybe got sick, I can only guess it was a mosquito? Does anyone have any insight or wisdom to share? I would love to do anything & everything I can to help the other members of the flock stay healthy & not fall victim to... whatever took this hen's life in what seemed like just a few hours. Thanks!