While canoeing down the Russian River, I observed one Osprey sitting in a nest in the dead branches of an oak tree and another sitting a little above the nest with a fish in its talons. I'm pretty certain both were adults as neither showed any white speckling on the wings. I could see no signs of any young in the nest. It seems rather late in the season to have a nest with no young. I wonder what the story is. There was quite a bit of calling coming from the tree - the bird on the nest was definitely doing some calling, and I think the other was calling a little as well. The nest tree was in a narrow strip of riparian woodland along the Russian River, not far downstream of the Alexander Valley Road bridge. The nest is circled in red in the second photo.
If you think this observation is inaccurate, please ad