Some quick checking shows that coyotes are native to this region, so I would have to guess that a lot of the howling is from them. I suppose the harvest clears away a lot of the cover that prey use to conceal themselves.
Last night, I was standing on the deck outside and a fairly large animal ran past. There wasn't enough light, but it must have been a rabbit. It certainly wasn't a raccoon as they don't run that fast, it was too small and compact for a deer, and its sort of bounding stride wasn't anything like a predator.