Feeding Behavior

Forages by watching from a perch and then flying out to catch insects, usually returning to perch to eat them. Uses feeding perches at various heights in forest, often low; may take insects in mid-air, from surface of foliage or branches, or from the ground.

Eggs

4, sometimes 3. Creamy white, sometimes lightly spotted with reddish brown. Incubation is by female only, 15-16 days. Young: Female broods young when they are small, and both parents bring food to nestlings. Age of young at first flight about 16-18 days. Young may remain in a group, tended by parents, for a week or more after fledging.

Young

Female broods young when they are small, and both parents bring food to nestlings. Age of young at first flight about 16-18 days. Young may remain in a group, tended by parents, for a week or more after fledging.

Diet

Insects. Apparently feeds only on insects. Summer diet includes beetles, caterpillars, moths, flies, leafhoppers, and small wasps. Winter diet not well known.

Nesting

In courtship, male approaches female, giving trilled call and fluttering wings. Nest site is on horizontal branch of tree (often Douglas-fir, pine, fir, or aspen), 10-100' above the ground, averaging about 25-35' up. Nest (built by female, rarely with help from male) is cup of weed stems, grass, strips of bark, lichens, and other items, lined with finer materials such as feathers, fur, and plant down. Spiderwebs often worked into nest. Nest looks more like those of wood-pewees than those of other Empidonax flycatchers.