Western Kingbird
Tyrannus verticalis
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Western Kingbirds are not really desert birds. Their presence in the Sonoran Desert is dependent on better watered habitats. Look for them along fences and utility wires in agricultural districts. They can also be found in semi-open riparian and grassland habitats. Riparian zones with more trees tend to favor the similar-looking Cassin's Kingbird. They are sometimes found in urban areas of Tucson and Phoenix, Arizona.
Kingbirds are active hunters of flying insects and will target quite large ones such as cicadas. Their upright posture is typical of flycatchers, f tyrannidae.