Today, for the third time in a few weeks, I saw one of these sky-borne over a golf course adjacent to a freeway. Around here they’re known as Marsh hawks. These days the ornithologists seem to want to call them Northern Harriers. Each sighting has been a fair distance away. Each time I’ve seen it, the way I was sure of its species was its white rump. This was fun, because I seldom see them and when I do they’re usually in unpopulated areas.