The Greater Pewee is a resident of the Santa Rita Mountains, breeding at higher elevations among pines and conifers. This is a large flycatcher, with a body of olive-gray and a white throat. The breast is also gray, leading to a yellow stomach. There is a crest on the head. The beak is wide and flat, with the lower part orange and the upper part dark gray. The wings and tail are both dark gray.
The Greater Pewee sometimes will hang out with a completely different species, and while doing so, prefers to be the only Pewee in the group, running off any intruders. They also are very aggressive in defending their nests, chasing off birds much larger than they are, as well as running off snakes and squirrels.
Their distinctive call is one you will not forget once you hear it; and it was often used as background sounds for Hollywood Westerns.
Reference: The Nature of Madera Canyon by Douglas W. Moore, Friends of Madera, 1999; whatbird.com