Pacific-slope flycatcher
- kingdom: Animalia
- phylum: Chordata
- class: Aves
- order: Passeriformes
- family: Tyrannidae
- genus: Empidonax
- species: Empidonax difficilis
Banff- Canmore
- Hinton
- Jasper Park Lodge
Alberta- Abbotsford
- Agassiz
- Anmore
- Armstrong
- Bowen Island
- Burnaby
- Cache Creek
- Campbell River
- Castlegar
- Chetwynd
- Chilliwack
- Colwood
- Coquitlam
- Courtenay
- Cranbrook
- Creston
- Cumberland
- Delta
- Duncan
- Enderby
- Fort St. John
- Fruitvale
- Gibsons
- Grand Forks
- Hope
- Kelowna
- Kimberley
- Kitimat
- Ladner
- Ladysmith
- Lake Cowichan
- Langford
- Langley
- Lumby
- Maple Ridge
- Merritt
- Metchosin
- Nakusp
- Nanaimo
- Nelson
- New Westminster
- North Cowichan
- North Saanich
- North Vancouver
- Oak Bay
- Oliver
- Osoyoos
- Parksville
- Pemberton
- Penticton
- Pitt Meadows
- Port Alberni
- Port Moody
- Powell River
- Prince George
- Prince Rupert
- Princeton
- Quesnel
- Revelstoke
- Rossland
- Salmon Arm
- Sechelt
- Sicamous
- Smithers
- Sooke
- Sparwood
- Summerland
- Surrey
- Terrace
- Tofino
- Tumbler Ridge
- Ucluelet
- Vancouver
- Vernon
- Victoria
- Walnut Grove
- West End
- West Vancouver
- Whistler
- White Rock
- Williams Lake
British Columbia
Canada
Bahía Asunción- Cabo San Lucas
- El Pescadero
- La Paz
- Loreto
- San José del Cabo
- Todos Santos
Baja California Sur- Nombre de Dios
Durango- Mineral del Monte
Hidalgo- Tacámbaro de Codallos
- Uruapan del Progreso
Michoacán- Cuernavaca
- Jiutepec
Morelos- Huauchinango
- Necaxa
Puebla- Xilitla
San Luis Potosí- Guaymitas
- Puerto Peñasco
- Álamos
Sonora
Mexico
Ajo- Anthem
- Arivaca Junction
- Beaver Dam
- Big Park
- Black Canyon City
- Bullhead City
- Casa Blanca
- Casas Adobes
- Catalina
- Catalina Foothills
- Ehrenberg
- Flagstaff
- Flowing Wells
- Glendale
- Green Valley
- Guadalupe
- Kingman
- Lake Havasu City
- Lake Montezuma
- Many Farms
- Nogales
- Oracle
- Oro Valley
- Parker
- Phoenix
- Prescott
- Rio Rico
- Rio Verde
- Sacaton
- Saint David
- Salome
- Scottsdale
- South Tucson
- Sun Lakes
- Tanque Verde
- Tuba City
- Tubac
- Tucson
- Wellton
- Wickenburg
- Willcox
- Yuma
Arizona- Acton
- Agoura
- Agoura Hills
- Aguanga
- Ahwahnee
- Alameda
- Alamo
- Albany
- Alhambra
- Aliso Viejo
- Alondra Park
- Alpaugh
- Alta Sierra
- Altadena
- Alum Rock
- American Canyon
- Amesti
- Anaheim
- Anderson
- Angels Camp
- Angwin
- Aptos
- Aptos Hills-Larkin Valley
- Arcadia
- Arcata
- Arden-Arcade
- Arnold
- Aromas
- Arroyo Grande
- Artesia
- Ashland
- Atascadero
- Atherton
- Auburn
- Auburn Lake Trails
- August
- Avalon
- Avila Beach
- Avocado Heights
- Azusa
- Bakersfield
- Banning
- Barstow
- Bayside
- Bayview
- Beale Air Force Base
- Bell
- Bell Gardens
- Belmont
- Belvedere
- Ben Lomond
- Benicia
- Berkeley
- Berry Creek
- Bertsch-Oceanview
- Beverly Hills
- Big Bear City
- Big Bear Lake
- Big Pine
- Bishop
- Black Point-Green Point
- Blackhawk
- Blue Lake
- Blythe
- Bodega Bay
- Bolinas
- Bonita
- Bonny Doon
- Bonsall
- Boonville
- Borrego Springs
- Bostonia
- Boulder Creek
- Boyes Hot Springs
- Bradbury
- Brawley
- Brea
- Brentwood
- Brisbane
- Broadmoor
- Brookdale
- Brooktrails
- Buellton
- Buena Vista
- Burbank
- Burlingame
- Cabazon
- Calabasas
- California City
- Calipatria
- Calistoga
- Callender
- Camarillo
- Cambria
- Cambrian Park
- Camp Meeker
- Camp Pendleton North
- Camp Pendleton South
- Campbell
- Campo
- Canoga Park
- Canyon Lake
- Capitola
- Carlsbad
- Carmel Valley Village
- Carmel-by-the-Sea
- Carmichael
- Carpinteria
- Carson
- Casa Conejo
- Casa de Oro-Mount Helix
- Castaic
- Castro Valley
- Castroville
- Cayucos
- Century City
- Channel Islands Beach
- Charter Oak
- Chatsworth
- Cherryland
- Chester
- Chico
- Chino Hills
- Chula Vista
- Citrus
- Citrus Heights
- Claremont
- Clayton
- Clearlake
- Clearlake Oaks
- Cloverdale
- Cobb
- Colfax
- Colma
- Colton
- Columbia
- Colusa
- Commerce
- Concord
- Copperopolis
- Corcoran
- Coronado
- Corralitos
- Corte Madera
- Costa Mesa
- Cotati
- Cottonwood
- Country Club
- Covelo
- Crescent City
- Crest
- Crestline
- Crockett
- Cudahy
- Culver City
- Cupertino
- Cutten
- Cypress
- Daly City
- Dana Point
- Danville
- Davis
- Day Valley
- Deer Park
- Del Mar
- Del Monte Forest
- Del Rey Oaks
- Desert Hot Springs
- Desert View Highlands
- Diablo
- Diamond Bar
- Diamond Springs
- Dixon
- Dixon Lane-Meadow Creek
- Dogtown
- Dollar Point
- Downey
- Duarte
- Dublin
- East Foothills
- East La Mirada
- East Palo Alto
- East Pasadena
- East Rancho Dominguez
- East Richmond Heights
- East San Gabriel
- East Sonora
- El Cajon
- El Centro
- El Cerrito
- El Granada
- El Monte
- El Rio
- El Segundo
- El Sobrante
- El Verano
- Eldridge
- Elk Grove
- Elkhorn
- Emerald Lake Hills
- Emeryville
- Encinitas
- Esparto
- Eucalyptus Hills
- Eureka
- Fair Oaks
- Fairbanks Ranch
- Fairfax
- Fairview
- Fallbrook
- Felton
- Ferndale
- Fetters Hot Springs-Agua Caliente
- Fillmore
- Folsom
- Fontana
- Foothill Farms
- Foothill Ranch
- Forest Ranch
- Forestville
- Fort Bragg
- Fortuna
- Foster City
- Fountain Valley
- Frazier Park
- Freedom
- Fremont
- Fullerton
- Gardena
- Georgetown
- Gerber
- Gilroy
- Glendale
- Glendora
- Gold River
- Golden Hills
- Goleta
- Gonzales
- Granite Bay
- Granite Hills
- Grass Valley
- Graton
- Green Valley
- Grover Beach
- Guadalupe
- Guerneville
- Hacienda Heights
- Half Moon Bay
- Hamilton City
- Happy Camp
- Harbison Canyon
- Hawaiian Gardens
- Hayfork
- Hayward
- Healdsburg
- Hercules
- Hermosa Beach
- Hidden Hills
- Highlands-Baywood Park
- Hillsborough
- Hollister
- Hollywood
- Humboldt Hill
- Huntington Beach
- Huntington Park
- Hydesville
- Idyllwild
- Idyllwild-Pine Cove
- Imperial Beach
- Inglewood
- Interlaken
- Inverness
- Inyokern
- Ione
- Irvine
- Irwindale
- Isla Vista
- Jackson
- Jamul
- Julian
- Kelseyville
- Kensington
- Kentfield
- Kenwood
- Kernville
- King City
- La Cañada Flintridge
- La Crescenta-Montrose
- La Habra
- La Habra Heights
- La Jolla
- La Mesa
- La Mirada
- La Presa
- La Puente
- La Riviera
- La Selva Beach
- La Verne
- Ladera
- Ladera Heights
- Ladera Ranch
- Lafayette
- Laguna Beach
- Laguna Hills
- Laguna Niguel
- Laguna Woods
- Lagunitas-Forest Knolls
- Lake Arrowhead
- Lake Elsinore
- Lake Forest
- Lake Los Angeles
- Lake San Marcos
- Lake of the Pines
- Lakeland Village
- Lakeport
- Lakeside
- Lakewood
- Larkfield-Wikiup
- Larkspur
- Las Flores
- Las Lomas
- Lawndale
- Laytonville
- Lebec
- Lemon Grove
- Lemoore
- Lewiston
- Lexington Hills
- Lincoln
- Lincoln Village
- Live Oak
- Livermore
- Lodi
- Loma Linda
- Lomita
- Lompico
- Lompoc
- Lone Pine
- Long Beach
- Los Alamitos
- Los Alamos
- Los Altos
- Los Altos Hills
- Los Angeles
- Los Gatos
- Los Molinos
- Los Olivos
- Los Osos
- Los Serranos
- Lower Lake
- Loyola
- Lucas Valley-Marinwood
- Madera Acres
- Malibu
- Malibu Beach
- Manhattan Beach
- Marin City
- Marina
- Marina del Rey
- Mariposa
- Martinez
- Mayflower Village
- Maywood
- McCloud
- McKinleyville
- Meadow Vista
- Mecca
- Meiners Oaks
- Menifee
- Menlo Park
- Middletown
- Midpines
- Midway City
- Mill Valley
- Millbrae
- Milpitas
- Mira Monte
- Mission Canyon
- Mission Hills
- Mission Viejo
- Modesto
- Mojave
- Monrovia
- Montague
- Montalvin
- Montara
- Montclair
- Monte Rio
- Monte Sereno
- Montebello
- Montecito
- Monterey
- Monterey Park
- Moorpark
- Moraga
- Morgan Hill
- Morongo Valley
- Morro Bay
- Moss Beach
- Mount Hermon
- Mount Shasta
- Mountain View
- Murphys
- Murrieta
- Murrieta Hot Springs
- Myrtletown
- Napa
- National City
- Needles
- Nevada City
- Newark
- Newcastle
- Newport Beach
- Nice
- Niland
- Nipomo
- Norco
- North El Monte
- North Fair Oaks
- North Glendale
- North Hollywood
- North Lakeport
- North Richmond
- North Tustin
- Novato
- Oak Park
- Oak View
- Oakhurst
- Oakland
- Oakley
- Occidental
- Oceano
- Oceanside
- Oildale
- Ojai
- Opal Cliffs
- Orange
- Orangevale
- Orcutt
- Orinda
- Oroville
- Oxnard
- Oxnard Shores
- Pacheco
- Pacific Grove
- Pacifica
- Pajaro
- Palm Desert
- Palm Springs
- Palmdale
- Palo Alto
- Palos Verdes Estates
- Paradise
- Pasadena
- Pasatiempo
- Paso Robles
- Pedley
- Penn Valley
- Penngrove
- Petaluma
- Pico Rivera
- Piedmont
- Pine Grove
- Pine Hills
- Pine Valley
- Pinole
- Pioneer
- Pismo Beach
- Pittsburg
- Placentia
- Placerville
- Pleasant Hill
- Pleasanton
- Pomona
- Port Hueneme
- Porterville
- Portola
- Portola Hills
- Portola Valley
- Poway
- Prunedale
- Quartz Hill
- Quincy
- Rainbow
- Rancho Cordova
- Rancho Cucamonga
- Rancho Palos Verdes
- Rancho San Diego
- Rancho Santa Fe
- Rancho Santa Margarita
- Red Bluff
- Redding
- Redlands
- Redondo Beach
- Redway
- Redwood City
- Redwood Shores
- Redwood Valley
- Reedley
- Richmond
- Ridgecrest
- Ridgemark
- Rio Del Mar
- Rio Dell
- Rio Linda
- Ripon
- Riverside
- Rocklin
- Rohnert Park
- Rolling Hills
- Rolling Hills Estates
- Rollingwood
- Romoland
- Roseland
- Rosemont
- Roseville
- Ross
- Rossmoor
- Rowland Heights
- Rubidoux
- Running Springs
- Sacramento
- Saint Helena
- San Anselmo
- San Antonio Heights
- San Bernardino
- San Carlos
- San Clemente
- San Diego
- San Dimas
- San Fernando
- San Francisco
- San Gabriel
- San Joaquin Hills
- San Jose
- San Juan Bautista
- San Juan Capistrano
- San Leandro
- San Lorenzo
- San Luis Obispo
- San Marcos
- San Marino
- San Martin
- San Mateo
- San Pablo
- San Pasqual
- San Pedro
- San Rafael
- San Ramon
- Santa Barbara
- Santa Clara
- Santa Clarita
- Santa Cruz
- Santa Fe Springs
- Santa Margarita
- Santa Maria
- Santa Monica
- Santa Paula
- Santa Rosa
- Santa Venetia
- Santa Ynez
- Santee
- Saranap
- Saratoga
- Saticoy
- Sausalito
- Scotts Valley
- Sea Ranch
- Seacliff
- Seal Beach
- Seaside
- Sebastopol
- Seeley
- Seven Trees
- Shandon
- Sherman Oaks
- Shingle Springs
- Sierra Madre
- Simi Valley
- Sky Valley
- Sleepy Hollow
- Soda Bay
- Solana Beach
- Solvang
- Sonoma
- Sonora
- Soquel
- South El Monte
- South Lake Tahoe
- South Oroville
- South Pasadena
- South San Francisco
- South San Gabriel
- South Whittier
- South Yuba City
- Spring Valley
- Stallion Springs
- Stanford
- Stockton
- Stratford
- Strawberry
- Suisun
- Summerland
- Sunnyside-Tahoe City
- Sunnyslope
- Susanville
- Sutter Creek
- Tahoe Vista
- Tahoma
- Talmage
- Tamalpais Valley
- Tamalpais-Homestead Valley
- Tara Hills
- Tehachapi
- Temelec
- Templeton
- Thermalito
- Thornton
- Thousand Oaks
- Three Rivers
- Tiburon
- Tierra Buena
- Topanga
- Toro Canyon
- Torrance
- Trabuco Canyon
- Tracy
- Truckee
- Tulare
- Tuolumne City
- Twain Harte
- Twentynine Palms
- Twin Lakes
- Ukiah
- Union City
- Universal City
- Upland
- Upper Lake
- Vacaville
- Val Verde
- Valencia
- Valinda
- Vallejo
- Valley Center
- Van Nuys
- Vandenberg Air Force Base
- Vandenberg Village
- Ventura
- Victorville
- View Park-Windsor Hills
- Villa Park
- Vine Hill
- Vista
- Waldon
- Walnut
- Walnut Creek
- Walnut Grove
- Walnut Park
- Watsonville
- Weaverville
- Weed
- Weldon
- West Carson
- West Hills
- West Hollywood
- West Menlo Park
- West Rancho Dominguez
- West Sacramento
- West Whittier-Los Nietos
- Westhaven-Moonstone
- Westlake Village
- Westminster
- Westwood
- Whittier
- Wildomar
- Willits
- Willow Creek
- Willowbrook
- Windsor
- Winter Gardens
- Winters
- Wofford Heights
- Woodacre
- Woodbridge
- Woodland
- Woodland Hills
- Woodside
- Wrightwood
- Yorba Linda
- Yosemite Valley
- Yountville
- Yreka
- Yucca Valley
California- Breckenridge
- Granby
- Idaho Springs
Colorado- Branford
- Branford Center
- East Haven
Connecticut- Manhattan
New York- Albany
- Aloha
- Ashland
- Astoria
- Aumsville
- Bandon
- Banks
- Barview
- Bay City
- Beaverton
- Bend
- Bethany
- Brookings
- Bunker Hill
- Canby
- Cannon Beach
- Canyonville
- Carlton
- Cascade Locks
- Cave Junction
- Cedar Hills
- Cedar Mill
- Central Point
- Clackamas
- Coburg
- Columbia City
- Coos Bay
- Cornelius
- Corvallis
- Cottage Grove
- Creswell
- Dallas
- Dayton
- Depoe Bay
- Drain
- Dundee
- Dunes City
- Durham
- Estacada
- Eugene
- Fairview
- Florence
- Forest Grove
- Four Corners
- Fruitdale
- Garden Home-Whitford
- Gearhart
- Gladstone
- Gold Beach
- Gold Hill
- Grand Ronde
- Grants Pass
- Gresham
- Happy Valley
- Harbor
- Hillsboro
- Hood River
- Independence
- Jacksonville
- Jennings Lodge
- Joseph
- Keizer
- King City
- Klamath Falls
- La Grande
- Lafayette
- Lake Oswego
- Lents
- Lincoln Beach
- Lincoln City
- Lowell
- McMinnville
- Medford
- Merlin
- Metzger
- Mill City
- Millersburg
- Milwaukie
- Molalla
- Moro
- Mount Hood Village
- Myrtle Creek
- Newberg
- Newport
- North Bend
- Oak Grove
- Oak Hills
- Oatfield
- Oregon City
- Pacific City
- Philomath
- Port Orford
- Portland
- Rainier
- Raleigh Hills
- Reedsport
- Riddle
- Rockaway Beach
- Rockcreek
- Rose Lodge
- Roseburg
- Saint Helens
- Salem
- Scappoose
- Seaside
- Sheridan
- Sherwood
- Siletz
- Sisters
- Springfield
- Stayton
- Sunnyside
- Sunriver
- Sutherlin
- Talent
- Tigard
- Tillamook
- Toledo
- Troutdale
- Tualatin
- Umatilla
- Veneta
- Vernonia
- Waldport
- Warren
- Warrenton
- West Haven
- West Haven-Sylvan
- West Linn
- West Slope
- White City
- Willamina
- Williams
- Wilsonville
- Winston
- Wood Village
- Yamhill
- Yoncalla
Oregon- Fox Chase
- River View Park
- Spring Ridge
Pennsylvania- Spearfish
South Dakota- Aberdeen
- Alderton
- Alderwood Manor
- Allyn
- Ames Lake
- Artondale
- Auburn
- Ault Field
- Bainbridge Island
- Belfair
- Bellevue
- Bellingham
- Benton City
- Bethel
- Birch Bay
- Black Diamond
- Blaine
- Bonney Lake
- Bothell
- Boulevard Park
- Bremerton
- Brier
- Bryn Mawr-Skyway
- Buckley
- Burbank
- Burien
- Burley
- Burlington
- Camas
- Canterwood
- Carnation
- Carson
- Cashmere
- Cathcart
- Cathlamet
- Centralia
- Chehalis
- Cheney
- Chico
- Cle Elum
- Clear Lake
- Clyde Hill
- College Place
- Colville
- Cosmopolis
- Cottage Lake
- Country Homes
- Coupeville
- Covington
- Darrington
- Davenport
- Dayton
- Des Moines
- DuPont
- Duvall
- East Hill-Meridian
- East Port Orchard
- Eastgate
- Eatonville
- Edgewood
- Edmonds
- Ellensburg
- Elma
- Enetai
- Ephrata
- Erlands Point-Kitsap Lake
- Esperance
- Everett
- Everson
- Fairwood
- Fall City
- Federal Way
- Felida
- Ferndale
- Fife
- Fife Heights
- Fircrest
- Fobes Hill
- Fords Prairie
- Forks
- Fort Lewis
- Frederickson
- Friday Harbor
- Geneva
- Gig Harbor
- Goldendale
- Graham
- Granite Falls
- Hansville
- Hazel Dell
- Home
- Hoquiam
- Indianola
- Inglewood-Finn Hill
- Issaquah
- Kalama
- Kelso
- Kenmore
- Kettle Falls
- Key Center
- Kingsgate
- Kingston
- Kirkland
- Kittitas
- Klahanie
- Lacey
- Lake Forest Park
- Lake Marcel-Stillwater
- Lake Shore
- Lake Stevens
- Lakeland South
- Lakewood
- Langley
- Lea Hill
- Leavenworth
- Liberty Lake
- Lofall
- Long Beach
- Longview
- Lynnwood
- Machias
- Manchester
- Maple Heights-Lake Desire
- Maple Valley
- Maplewood
- Marietta
- Martha Lake
- Marysville
- McChord Air Force Base
- McCleary
- McMillin
- Mead
- Meadowdale
- Medical Lake
- Medina
- Mercer Island
- Mill Creek
- Minnehaha
- Monroe
- Montesano
- Mount Vernon
- Mount Vista
- Mountlake Terrace
- Mukilteo
- Napavine
- Navy Yard City
- Newcastle
- Newport
- Nooksack
- Normandy Park
- North Bend
- North Creek
- North Puyallup
- North Yelm
- Oak Harbor
- Ocean Park
- Ocean Shores
- Olympia
- Oroville
- Orting
- Parkland
- Parkwood
- Point Roberts
- Pomeroy
- Port Angeles
- Port Angeles East
- Port Hadlock-Irondale
- Port Ludlow
- Port Orchard
- Port Townsend
- Poulsbo
- Prairie Ridge
- Pullman
- Purdy
- Puyallup
- Rainier
- Raymond
- Redmond
- Renton
- Republic
- Ridgefield
- Riverbend
- Riverton
- Rochester
- Rosedale
- Salmon Creek
- Sammamish
- SeaTac
- Seabeck
- Seattle
- Sedro-Woolley
- Sequim
- Shelton
- Shoreline
- Silver Firs
- Silverdale
- Snoqualmie
- South Bend
- South Hill
- Southworth
- Spanaway
- Spokane
- Spokane Valley
- Stanwood
- Steilacoom
- Stevenson
- Sudden Valley
- Sultan
- Sumas
- Summit
- Sumner
- Sunnyside
- Sunnyslope
- Suquamish
- Tacoma
- Tanglewilde-Thompson Place
- Tanner
- Tenino
- Terrace Heights
- Three Lakes
- Tonasket
- Town and Country
- Tracyton
- Trentwood
- Tukwila
- Tulalip
- Tumwater
- Union Hill-Novelty Hill
- University Place
- Vancouver
- Vashon
- Waitsburg
- Walla Walla
- Waller
- Warm Beach
- Washougal
- Wauna
- West Lake Sammamish
- West Side Highway
- Westport
- White Center
- White Salmon
- Wollochet
- Woodinville
- Woods Creek
- Woodway
- Yarrow Point
Washington
United States