Anna's is the most common hummingbird in southern California, and one of only three species that are permanent residents of the US or Canada (Allen's and Costa's are the others). Unlike most other hummers, Anna's has a (minimal) song.
 

Physical Description
Average weight: male 4.31 g, female 4.07 g. The Anna's is the largest hummingbird seen on the west coast.
 

Plumage
Adult male: Metallic green back, dark rose-red crown and gorget, grayish breast.
Adult female: Green back, grayish-white breast, white throat with some red spots, white tips on outer tail feathers.
Juveniles: Young of both sexes look like the adult female, but may have unmarked throats.
 

Distribution
Observed in Alabama, Alaska, Arizona, Arkansas, California, Colorado, Florida, Georgia, Idaho, Kansas, Louisiana, Mississippi, Missouri, Montana, Nevada, New Mexico, Oregon, Tennessee, Texas, Utah, Washington, and British Columbia (resident on Vancouver Island).

I was standing in line at the local grocery store when the lady behind me said "hummingbirds?".  I wasn't sure what she meant so I said "pardon me". 
She pointed to my basket filled with 10 lb bags of sugar. 

We have one hummy that stays all winter, but most of them come back in mid April.  Most of the ones I see are Anna's Hummingbirds.  Occasionally I see a Rufous.  We have 5 large feeders spaced out on poles around the edge of the deck.  My husband's favorite recipe is 1 cup of sugar to 3 cups of water with just a tiny drop of red food coloring so he can see when the feeders need to be filled. 

I have literally taken thousands of photos of them over the years.  They never cease to amaze me.  Those tiny little fairy wings beating and beating.  Sometimes they remind me of helicopters and other times of jet fighters.  They are very competitive and can be down right hostile to each other.