Pacific-slope Flycatcher (Empidonax difficilis) - HBW 9, p. 364
French: Moucherolle côtier
Spanish: Mosquero del Pacífico
Other common names: Coastal/Redwoods Flycatcher; Western Flycatcher (when grouped with E. occidentalis)
Taxonomy: Empidonax difficilis S. F. Baird, 1858, Fort Steilacoom, Washington, USA.
Formerly treated as conspecific with E. occidentalis; separated on grounds of differences in voice, morphology and allozymes, but this treatment questioned by some authorities; further study perhaps warranted in area where the two contact each other (interior NW of North America). Sometimes E. flavescens considered conspecific. Channel Is race insulicola possibly a separate species, differs from mainland populations in morphology, voice, habitat use and genetics. Three subspecies recognized.
Subspecies and Distribution:
- difficilis S. F. Baird, 1858 - breeds from SE Alaska S to S California (generally W of Sierra Nevadas) and extreme NW Mexico (N Baja California); winters W Mexico (S to S Baja California, Sinaloa and Oaxaca).
- insulicola Oberholser, 1897 - breeds on Channel Is, off S California (USA); winter range unknown.
- cineritius Brewster, 1888 - Sierra de la Laguna (Victoria Mts), in Cape District (S Baja California).
- Least Concern Enlarge map
An individual perched with an insect and flying away, then returning with another winged insect and flying to the nest to feed i Locality Santa Barbara County, California, USA (United States) (ssp difficilis)
Don DesJardin 31 May 2007 5 years ago 20 sec 4.8
A pair at their nest site Locality Point Reyes National Seashore, California, USA (United States) (ssp difficilis)
Greg Baker 21 May 1998 48 weeks ago 26 sec 4
An adult calling from a tree Locality Arcata, Humboldt County, California, USA (United States)
AndrewSmith 20 May 2013 56 min ago ADDED TODAY! 19 sec 0
An adult calling from the tree tops
Locality Arcata, Humboldt County, California, USA (United States)
AndrewSmith 20 May 2013 1 hour ago ADDED TODAY! 4
Flycatching from a perch.
Locality Wood Lake, British Columbia, Canada (ssp difficilis)
Ken Simonite 21 July 2012 37 weeks ago 4
A perched bird.
Locality Campbell Valley Regional Park, Langley, British Columbia, Canada (ssp difficilis)
Ken Havard 10 May 2012 47 weeks ago 3.3
Pacific-sloper Flycatcher in hand to be photographed in birds practice by the Centro Universitario de Ciencias Biológicas y Agro
Locality Agua Brava, Bosque la Primavera, Zapopan, Jalisco State, Mexico (Northern)
Bird Watcher Ninja 26 March 2009 1 year ago 3
A perched bird.
Locality Panuco Road, Sinaloa State, Mexico (Northern)
Ken Havard 28 February 2005 2 years ago 2.3
Singing at a city park.
Locality Cupertino, Santa Clara County, California, USA (United States)
Erik Breden 3 years ago 1.8