A two-hour walk on a cold day with only about four minutes of raptor sightings? Totally worth it.
A hike along the parkway from the GW Bridge up to Dyckman St. was fruitless, but on reaching Dyckman... bang. A red-tail perched in the tree above the house at Payson Playground on the south side of Inwood Hill Park. From the looks of it, the Inwood adult male.
After a walk along the Hudson shoreline in Dyckman Fields and starting along the trail around the hill... good god, something huge over the river. A bald eagle! It circled about a few times and then headed back north toward Riverdale.
The park ranger and the bird watchers down by the river must have gotten an eyeful.