merlins, or peregrine falcons? After looking at images on Google, I think maybe female harrier hawks? Here is a close up of the same photo.
Beautiful day at Peck Park in San Pedro, overlooking the Port of Los Angeles.
Of course, once these birds took off--one at a time--the ever-present crows that populate that park swarmed and chased them away.
Here is another picture. My guess is that the birds were 14-15 inches long.
And below right is a picture of a black phoebe--birds that I cannot ever remember seeing until recently, but which now seem to be all over.