"Snowbirds and White Cities"

http://uwepetercom.blogspot.com/2010/04/snowbirds-and-white-cities-san-diego-to.html
San Diego to Ajo | California | Arizona | USA | 2010-04-05
The term Snowbird is used to describe people from the U.S. Northeast, U.S. Midwest, or Canada who spend a large portion of winter in warmer locales such as California or Arizona. There are places like Quartzsite, Arizona, that have been labeled "white cities" because from a bird's eye view all the motorhomes cover the landscape in white and then in the summer are gone.