I watched a crow sitting high up in a maple, eating something. It was some sort of small animal with a long tail of a mouse. Eventually, a scrap of something fell to the snow below and I went to take a look. It was the pelt of a mouse, the whole body minus the head and some of the legs, about 1.5 inches long. Whether the crow caught the rodent or found it dead, I don't know, but crows will catch live prey.