Hi, everyone. Husband and I got our first chickens this past February: three hens -- wyandotte, buff orp, and welsummer. They free-range a bit and have a nice 100 square foot pen to roam around in too. We live in the Midwest, but have had some nice weather recently. Shut the girls in the coop last night, and they were all nestled and fine. This morning at 8AM (a little after light), I let the girls out and only the buff and welsummer came out right away. Our wyandotte stayed in by the door. Four hours later when I went to give them treats, the wyandotte was under our coop, face-down, and dead (from the rigamortis, I would say she's been dead long enough to get stiff!). SO WEIRD. Husband buried her, I cleaned the coop (all the shavings taken out, the base and roost cleaned with white vinegar and water, and the food/water dishes emptied. I'm worried the other girls might die too. I wanted to check for any sign of outward attack, but saw none. Checked around her bum and found this yellow discharge, but coming from around feathers. Didn't know if it was bodily fluid being expelled or something that might suggest death? She was my biggest layer, and I just wanted to check with any seasoned chicken owners that I'm taking the right protocols. Also, how far back do I go with throwing eggs away? And do the other chickens notice? We only have the two now, and the welsummer won't be quiet! It was her nighttime snuggle buddy. Thank you in advance!