Geotripper's California Birds

Western Bluebirds ( Sialia mexicana ) run hot and cold on my walks. Sometimes weeks will pass and I won't see any at all, and then I...

In my usual life as a geologist and professor, I often describe to my students the secret of mineral or fossil hunting: once you've se...

I wandered out to the future river park in Waterford today, and saw my first Western Kingbird of the season. They spend their winters in C...