We had a female and male Peking duck, always raised with the chickens. Yesterday was beautiful and they all free roamed in the afternoon. Ducks had a great time in the ditches and running with the chickens. I noticed the female duck was having trouble getting in and out of the run, it has about a 6 inch high fence crossing the doorway. today i come home to find the female dead in the coop, they share with the chickens. All the animal seem a bit upset, I got her out but now I am concerned with raising the drake alone, with the chicken. They have been together since we got them all. If we get other ducks they still could not be together for weeks. should he be separated from the chickens.