Northern Flicker

Saw this guy at work today, hammering away on a street light:

It's a Northern Flicker, and it's a type of woodpecker. The male's the one with the red moustache on the right.

Apparently they do this to scare away other males and attract mates; in the wild, they use hollow logs. From Wikipedia:

This bird's call is a sustained laugh, ki ki ki ki ..., more congenial than that of the Pileated Woodpecker. One may also hear a constant knocking as they often drum on trees or even metal objects to declare territory. Like most woodpeckers, Northern Flickers drum on objects as a form of communication and territory defense. In such cases, the object is to make as loud a noise as possible, and s why woodpeckers sometimes drum on metal objects. One Northern Flicker in Wyoming could be heard drumming on an abandoned tractor from a half-mile away.

Oh, and also saw the standard pair of bald eagles circling overhead.