Looks like a hen, it does have the pea comb and feathered feet. It is not pure in its color, should be all buff but still a pretty chicken. Photo I attached is the Light Brahmas.
For sure not a coyote. Could it have been sick and flopped around before dying? Chickens will eat other chickens that they think are weak or injured also. I had one hen attacked bad by a dog, she managed to escape but due she had so much blood the other chickens began to eat her, pulling her...
Oh even the tiniest baby possum will rip a chickens head off easy. That is where they strike first and I had a baby possum get into one of our coops and I felt bad we had to put it down it was very young and small, but it was determined to keep killing one after the next even after lights went...
They are a mix breed. White cochins are all white with straight comb and feathers on feet and toes that are very wide, plus they will not jump high. Light brahamas have a black around their necks on both male & females with a pea comb. Those are missing the black around neck to be a light...