This crow was eating a lot of snow, hopping up and down the branch near the Ash Woods birdfeeder. This is a way for them to get some moisture.

Notice the white splotches on his feathers? This is what happens when hundreds of crows roost together in close proximity...if the one above let's go, the ones below get the splat! You rarely see this in summer when crows are off doing their own thing, but once they begin congregating again in large roosts the white splotches become evident on many crows.