Identificaciones de datad54

Marin Headlands hike, specifically trying to visit new plant communities I haven't explored yet. Earlier I visited Horseshoe Bay to try dock fouling for the first time.

My observations from Marin Headlands:
https://www.inaturalist.org/observations?nelat=37.85513634622161&nelng=-122.48313099141484&on=2024-07-09&order=asc&swlat=37.81785403291719&swlng=-122.55711704488164&user_id=joemdo

My general observations from Horseshoe Bay:
https://www.inaturalist.org/observations?nelat=37.837174671353196&nelng=-122.44929503408186&not_in_project=dock-fouling-in-california&on=2024-07-09&order=asc&swlat=37.82785358970445&swlng=-122.49465655294172&user_id=joemdo

My dock fouling observations from the one small public dock:
https://www.inaturalist.org/observations?on=2024-07-09&order=asc&project_id=2675&user_id=joemdo

This was a treat. Was hightailing it back to Paseo Padre to get breakfast and had turned my camera off.
The waterfowl hanging out in the reeds all took off and I thought I heard a Kestrel or something but none of the wing movements looked like it. Then out of the corner of my eye something larger than a heron ponders in. So I start shootin. Only then do I notice the head shape. What a fly by! It went over the hill and I was unable to see where it continued on to.