Empidonax wrightii
(Gray Flycatcher)
Physical
Description:
Size 5.5-6"
(14-15cm). This Empidonax is gray above and light below (some birds may show
an olive tinge on the back). Medium eye ring. Bill long with flesh-colored lower
mandible. Pale white wing bars. Tail long, often showing white edges.
Similar Species- Most Empidonax flycatchers are so similar in appearance that it is nearly impossible to tell them apart be sight alone without a bird in hand. Luckily, their songs and calls along with habitat are good diagnostics.
Song:
A
staccato, two-syllable song. Che-whip! or Che-whey! Note a dry Whit!
Distribution:
Breeds
from central Oregon, southwestern Idaho, southwestern Wyoming, northeastern
Utah, and central Colorado, south to east-central California, southern Nevada,
central Arizona, and west-central New Mexico. Winters from southern California
and central Arizona, south to Baja California and south-central mainland of
Mexico.
Habitat:
Found in arid woodlands and brushy areas.
During migration and in winter, also found
in arid scrub, riparian woodlands, and mesquite.
Idaho study found species more abundant in old-growth juniper stands than in
prescribed burn or clearcut areas.
Diet:
Apparently eats small insects (beetles,
grasshoppers, moths, etc.).
Ecology:
Hunts from perch; catches food in air or on
ground. Builds cup-shaped nest in shrub or tree (frequently juniper or sage). Breeding
population of approximately 25 pairs/100 ha has been reported in Oregon. Chipmunks and
jays have been observed destroying nests.
Reproduction:
Female incubates 3-4 eggs for 14 days.
Nestlings are altricial and downy, are tended
by both parents, leave nest in 16 days, and are fed by parents for 14 more days.
Conservation:
Element Code: | ABPAE33100 |
Status: | Protected nongame species |
Global Rank: | G5 |
State Rank: | S2,NTMB |
National Rank: | N5B,NZN |
Important
State References:
McCoy, M. 1993. Breeding bird survey
of clearcut, prescribed burn, and seral/old growth stands of western juniper.
USDI Bur. Land Manage., Boise District, Challenge Cost Share Project Report,
Boise. 19pp.