The Dusky Flycatcher is one of the many flycatcher species you will see in the Santa Rita Mountains south of Tucson. Not to be confused with the Dusky-capped flycatcher, however, which is a different species.
This small flycatcher has olive to olive gray on the upper body with white or yellowish underneath. The eye ring is faint and often indistinguishable. The black beak has a touch of orange on the underside. The legs and feet are also black.
The Dusky Flycatcher breeds in the mountains of Central Arizona south, and in the Santa Rita Mountains would be found in higher elevations as they prefer tall trees.
If you were to see a group of these, you could say any one of these nouns and be correct. A grouping is called either a “outfield”, “swatting”, “zipper” or “zapper”.
Reference: The Nature of Madera Canyon by Douglas W. Moore, Friends of Madera, 1999; whatbird.com