Pretty sure this is a Golden Eagle A Golden Eagle, being harassed by some small birds, made a couple of low passes over my position, while on a hike in Tolay Lake park.
Golden Eagle, Tolay Lake Regional Park
Small bird still pursues the eagle.
Female Western Bluebird, Tolay Lake Regional Park
 Meadow Lark  Lots of Meadow Larks, but all from a distance |  Black Phoebe, Tolay Lake  California Poppies, Tolay Lake |
Goldfinch were chattering and feeding among the tall grasses
Loggerhead shrike in flight, Tolay Lake Regional Park Thinking two chunky birds at the top of a bare tree in the park were scrub jays, I didn't give them much attention, just snapped one photo, but when they took off, I realized they were not Jays - they were Loggerhead Shrikes! - Tolay Lake Regional Park is one location where they are known to be seen! Hopefully, I can get some better photos on a return visit.
My one still photo of the intriguing Loggerhead Shrike, Tolay Lake Regional Park
 A Tern flew over the park |  This female Kestrel was actively hunting near some trees |
The woods were full of house wrens
House wren, possibly a juvenile, Tolay Lake Regional Park
Ash-throated Flycatcher, Tolay Lake
White-breasted nuthatch, Tolay Lake
 Red-tail hawk, Tolay Lake Regional Park | Surprised a red-tail hawk when I turned a bend in a wooded section of the park - it jumped high in this tree and strained to get a good look at the intruder. |
Red-tail hawk finally taking to the air
Red tail, zooming away
Some of the tree swallow nests were still active, here is an adult bringing a beak full of bugs to a nest - the chicks could be heard chirping inside
Another view, Tree swallow bringing food to a nest. Tolay Lake Regional Park