SCIENTIFIC NAME: Empidonax Hammondii
Adults have grayish-olive upperparts, darker on the wings and tail, with whitish underparts. They have a conspicuous white eye-ring, white wing bars, a small bill and a short tail. Their breast is washed with gray and the sides of the belly with yellow.
Females usually have a shorter, wider bill compare with males.
Juveniles are similar to adults, but have broader wing bars and are more buff.
BILL: dark and small.
SIZE: measures about 4.7 - 5.5 inches in length, with a wingspan of 8.75 inches.
WEIGHT: weighs about 8 - 12 grams.
COLOR: grayish-olive, gray, white and yellow.
Insects, including caterpillars, moths, beetles, bees, wasps, and other small insects.
Mature coniferous and mixed forests, dense fir forests, conifer and aspen forests and dogwood.
The Western United States, including Montana, Wyoming, California, Nevada, Utah, Arizona, New Mexico and Colorado, Canada, British Columbia, Yukon and Alberta.
Certain birds have been found as far north as Alaska.
CALL: A sharp "peek".
SONG: A multi versed hoarse "ssilit", "greeep", "silit", "pweet".
NEST: The female gathers nesting materials and builds the nest alone. It is a neat, compact cup made of grass, plant fibers, lichen, and bark lined with material such as hair, leaves, rootlets, feathers, or string, held together with spider web.
EGGS: 3 - 4 creamy-white eggs, sometimes marked sparingly with small reddish-brown dots.
INCUBATION: 15 - 16 days, female.
NESTLING PHASE: 17 - 18 days.
They forage in typical flycatcher fashion, observing from a perch, and then flying out to snag insects when spotted, returning to its perch to consume them.
They will capture flying insects in mid-air or will glean insects from branches or the foliage.