Last year I had a scrape that had activity in it until late april...it seemed weird to me but I posted about it and had some people say that the deer use it as a means of communication and sometimes a scrape will stay open year round. The scrape I found didn't get used that much during the summer, but I could tell the deer were still checking out the overhanging branch and then it opened up in early fall and has stayed open again through the winter so far. We've had a lot of snow this year too in Northwest Wisconsin.