There is currently a Red-naped Sapsucker in the eucalyptus trees south of the Golden Gate Park Horseshoe Pits. See https://ebird.org/checklist/S75045026 for photos. Presumed last years returning bird.

As of 7 AM this morning, I found a male Black-throated Blue Warbler at the entrance to the Fuchsia Dell of Eastern GGP. It flitted about for around a minute before flying off, and I was not able to re