Ruby-crowned Kinglet, Regulus calendula


Ruby-crowned Kinglet
Ruby-crowned Kinglets are common wintering birds in the SF Bay Area; they sometimes allow close approach, but they are very small and constantly moving, and are hard to capture out in the open. They are similar in appearance to Hutton's Vireo, but have smaller bills and dark feathering below the larger wingbar.
 


Ruby-crowned Kinglet


Ruby-crowned Kinglet
The red crown feathers for which the species is named are often completely concealed, and when they appear it is usually as a narrow red strip, shown above. The full display below is a rare sight.
 


Ruby-crowned Kinglet

Ruby-crowned Kinglet


Ruby-crowned Kinglet


Ruby-crowned Kinglet


Ruby-crowned Kinglet