There's a backroad on my route to cardiac rehab, and at this time of the year, it's one of those natural history touchstones because it's where I typically spot the first returning Osprey that nest in platforms erected along the power lines that cut through the area. Late this afternoon, I saw something in one of the nests, but it looked wrong for a Fish Hawk—wrong, indeed. When it stretched to its full length, it was clear that the bird bent on claiming the nursery was a Great Blue Heron, probably also a recent returnee. The lanky Heron no doubt figured that if it got to the nest first, it would be fine, but I'm guessing the Osprey will have something to say about the wannabe usurper's claim, however early staked.