This is a Western Kingbird I saw just checking things out on the telephone wire while I was on my way to work. Thanks to my great friend Kimberly I was able to properly identify this bird.
Taken with my Canon Powershot S5is.
Featured in I Love Birds on 4/13/10
Western Kingbird (Tyrannus verticalis)
The very aggressive Western kingbirds are 8 to 9 inches. They are light grayish green above. They have a black tail with white edges, and dark wings. The throat and upper breast is light gray, below that, and under the wings is light yellow. Just like the Eastern kingbird they have a bit of red in the crown that is not often seen. The two sexes look alike.