Baylands geometry

Pintail

The Palo Alto Baylands are teeming with waterfowl right now. On my morning run today I got a nice up-close look at a flock of northern pintail. This is the most beautiful and graceful of our ducks, in my opinion. The male is simply a splendid creature, with his dark chocolate head, elegant coloration and markings, and eponymous tail feathers. But the female should not be overlooked, with her richly tawny head, subtle mottling, and equally graceful long neck.
(Photo source)