adult (male?) "California" Red-shouldered Hawk
If the Florida race is the "strawberry blonde" then the California race is the true redhead of the bunch. Even on a gray day without sunlight you can see that this bird is very bright orange, and the orange extends up on to the head. The barring on the upper breast is so dense that it actually more of an orange collar than individual bars. I'm not as familiar with this race, but I assume that (like the Florida breeding birds I've observed) the males show the lighter heads with more orange, and the females tend to be more brown headed. As such I'd guess this to be a male as it is toward the bright extreme with much orange on the head. Perhaps some of the west coast folk could chime in here though with opinions.
At any rate, stuff like this makes the life of a travelling birder fun.