The Hammond's Flycatcher is one of the very similar Empidonax flycatchers, and
can be quite difficult to tell apart from it's close relatives, especially the
Dusky Flycatcher. The Hammond's even has the same general geographic
distribution as the Dusky Flycatcher,
but while that species is typically found in low brush and chaparral, the
Hammond's Flycatcher is typically found high in conifer stands, typically at
Habitat: Typically found at higher elevation conifer
forests, often where conifers mix with deciduous trees such as aspens.
Uses mountain woods on its wintering grounds, but typically deciduous forests.
Diet: Feeds exclusively on insects, including
caterpillars, moths, beetles, bees, wasps, and other small insects.
Behavior: Forages 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.
Nesting: Nests at mid to high heights in trees,
typically conifers, but sometimes aspen.
Breeding Map: Non-breeder in South Dakota
Song: Has a three-phrase song, typically beginning
with a si-tik, then tsvi-vik with the first syllable higher,
and ending with a lower and gruff rrrrr-vik.
Migration: Summers in the mountains of western North
America, from New Mexico up through Canada and into Alaska. Winters in
Mexico and Central America.
Conservation Status: Widespread and common, with no
conservation concerns at this time.
Cornell University's "All About Birds":