Falcons in Huntington Beach Central Park

I think these are peregrine falcons. Falcons, peregrines especially, have always seemed mythical birds, found only in tales; the birds of kings and courtiers. It's wonderful finding them in the local park, like stepping into a legend.

I've also never seen two as relaxed as the two in the tree, busy preening themselves. The third bird, the one alone, was calling and watching. Were they, I wonder, part of the same hatching? Or was the caller a younger bird? I have been told that falcons nest in and near the park, though I've never seen one of their nests yet.