SCIENTIFIC NAME: Empidonax Oberholseri
Adults have olive-gray upperparts, darker on the wings and tail, with whitish underparts; they have a noticeable medium-width white eye-ring, white wing bars and a medium-length tail.
The breast is washed with olive-gray and the belly is faintly yellow.
The bill is mainly dark. It is a bit smaller than the American grey flycatcher and a bit larger than the Hammond's flycatcher.
Juveniles are pale gray with a yellowish bill.
BILL: dark and small
SIZE: measures about 5.1 - 6 inches in length, with a wingspan of 7.9 - 9.1 inches.
WEIGHT: weighs about 9.3 - 11.4 grams.
COLOR: olive-gray, white and yellow.
Mountain slopes and foothills with brush and scattered trees (especially ponderosa pine).
Southern Arizona and Mexico, the southwest United States, the Mojave, Sonoran, and Chihuahuan Deserts.
CALL: A dry "whit", is the common call and a sad "dew-hic", given by the male is the less common call.
SONG: Variable songs of "chirp", "greeep", or "pweet".
NEST: The female builds a cup-shaped nest made of woven grasses and plant material lined with grass, hair, plant down, lichen, and feathers.
EGGS: 2 - 5 dull white eggs, occasionally spotted with brown.
INCUBATION: 15 - 16 days.
NESTLING PHASE: 15 - 20 days.
They forage in typical flycatcher fashion, observing from a perch and flying out to catch passing insects.
They will also sometimes hover to glean insects from foliages or twigs.