Pacific-slope Flycatcher Empidonax difficilis
STANFORD LOCATIONS: Uncommon migrant and summer resident in more heavily vegetated areas; most abundant during migration. Few pairs breed on campus, though one or two pairs can usually be found near the Mausoleum in summer.

Nest Location	Nest Type	Eggs Mating System	Dev. Parental Care	Primary & 2ndary Diet	Foraging Strategy
			F I: 14-15 DAYS ALTRICIAL
CLIFF GROUND 0 - 30 feet	F	3-4 (3-5) MONOG	F:14-18 DAYS MF		HOVER & GLEAN

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BREEDING:	Decid and conif forests and woodlands, esp near water.? broods.
DISPLAYS:	?
NEST:	Wide variety of situations from stream bank or roots of upturned tree to eaves, cliff ledge, cavity in small tree; of moss, lichen, rootlets, grass, leaves, bark, lined with shredded bark, hair, feathers.
EGGS:	White to creamy, spotted with browns, occ lavender, esp near large end. 0.7" (17 mm).
DIET:	Also few berries and seeds.
CONSERVATION:	Winters from n Mexico to s Mexico. Rare cowbird host.
NOTES:	Often interspecifically territorial with Hammond's Flycatcher in Pacific n w. Female broods.
ESSAYS:	Interspecific Territoriality; Sibling Species; Birds in the Bush
REFERENCES:	Beaver and Baldwin, 1975; Davis et al., 1963; Johnson, 1980.

Help	Abbreviations	Species-Alphabetical	Species-Taxonomic	Essays-Alphabetical	Essays-Categorized
Except for Stanford Locations, the material in this species treatment is taken, with permission, from The Birder's Handbook (Paul Ehrlich, David Dobkin, & Darryl Wheye, Simon & Schuster, NY. 1988).