Hello... very sad morning for me. My sweetest, most loving little hen passed away unexpectedly. She was a black silkie, vaccinated, VERY LITTLE. Almost like she never grew or matured passed 5 months. But otherwise, a healthy little chicken. Ate, drank, got along with the big birds, just like any other chicken. No symptoms. This morning I found her under the roost, laying in poo. Lethargic, she couldn't stand, and she was panting. No visible injuries. I picked her up immediately and tried to help her, but as soon as I got the cage set up inside with warmth, food and water... she passed away in my arms. I'm very sad, all my other birds are healthy, happy, and spunky. Anyone have any clues? Any advice? Should I be concerned about my other birds? Thank you for any help. She's buried now so I can't do any further examining.