The willow flycatcher (Empidonax traillii) is a small insect-eating, neotropical migrant bird of the tyrant flycatcher family. There are four subspecies of the willow flycatcher currently recognized, all of which breed in North America (including three subspecies that breed in California). Empidonax flycatchers are almost impossible to tell apart in the field so biologists use their songs to distinguish between them. The binomial commemorates the Scottish zoologist Thomas Stewart Traill.
Willow Flycatcher
Date Location Count
2020-10-04 08:00Lake Merced1
2020-10-04 13:16Vista Grande Canal1
2020-10-04 07:00Rodeo Lagoon1
2020-10-04 14:07Bolinas Lagoon--Pine Gulch1
2020-10-03 07:08Lake Herman1
2020-10-04 15:01Byxbee Park1
2020-10-04 09:17Don Edwards NWR (SCL Co.) (please use a more specific hotspot where possible)1
2020-10-09 07:00Southeast Farallon Island (restricted access)1
2020-10-09 08:13Ulistac Natural Area1
2020-10-11 09:15Contra Loma Regional Park1
2020-10-03 08:08Vasona Lake County Park1
2020-10-07 09:09Riverfront Regional Park1
2020-10-05 15:00Mines Rd. (ALA Co.)1
2020-10-02 07:30Putah Creek--Levee Rd.1
2020-10-03 12:03Babel Slough 1
2020-10-15 07:55Hare Creek- MLT trail & Babcock Beach1
2020-10-01 16:33Lone Tree Rd. (SHA Co.)2
2020-10-10 07:47Hardie Park/Cayucos Creek (Ocean Ave Bridge to Hwy 1 Bridge), Cayucos1
2020-10-02 14:25Del Mar Park--Morro Bay1
2020-10-03 08:56Lewiston-Lowden Ranch Historic Site1
2020-10-03 09:10TLDD--Hacienda Evaporation Basin (restricted access)1
2020-10-02 09:36Elings Park2
2020-10-13 15:27Carpinteria Creek1
2020-10-01 09:35Pitts Ranch Park1
2020-10-04 07:22Pt. Mugu SP--Sycamore Canyon3
2020-10-09 07:05Ridgecrest--area w/in Ward Ave.-Downs St.-Las Flores Ave.-Mahan St.1
2020-10-03 06:45Piute Ponds (permit required)1
2020-10-11 08:06Malibu Bluffs Park1
2020-10-03 10:00Topanga SP1
2020-10-14 10:25Rancho Sierra Golf Club (Private)1
2020-10-04 09:58Antelope Valley--Roosevelt Church and Tree Row1
2020-10-03 08:40Ballona Freshwater Marsh1
2020-10-12 11:10AES Redondo Wetland1
2020-10-07 16:23San Gabriel Mtns.--Big Pines1
2020-10-02 06:18Harriett M. Wieder Regional Park1
2020-10-14 10:00Huntington Central Park--Urban Forest1
2020-10-03 07:40Mile Square Regional Park1
2020-10-11 10:23Mojave Narrows Regional Park1
2020-10-03 06:47San Jacinto Wildlife Area1
2020-10-05 08:10Baker sewage ponds1
2020-10-10 08:27Whitewater Preserve1
2020-10-04 06:39Doyle Community Park1
2020-10-04 07:08Mojave National Preserve--Pachalka Spring1
2020-10-02 14:34Lake Murray--Kiowa Dr. entrance1
2020-10-09 08:25Campo de Golf Bajamar1
2020-10-06 06:30Jacumba--town1
2020-10-10 08:00Desert Center--Lake Tamarisk1
2020-10-01 11:07Club Caza La Grulla (acceso restringido)1
2020-10-07 07:30Lake Havasu--North end viewpoint2
2020-10-07 09:20Lake Havasu SP--Windsor Beach2
2020-10-06 14:40Ahakhav Tribal Preserve5
2020-10-05 13:23Cibola Valley Conservation Area2
2020-10-05 07:25Cibola NWR--Cornfield Nature Trail2
2020-10-02 07:16Yuma West Wetlands2
2020-10-03 08:51Hidden Shores Golf Course1
2020-10-11 07:35Spot Road Farm2
2020-10-03 09:25Central Saanich--Maber Flats1
2020-10-03 16:14Ajo-Bud Walker Park1
2020-10-02 06:22Salt River--Granite Reef Recreation Area1
2020-10-02 15:49Riparian Preserve at Gilbert Water Ranch1
2020-10-03 16:56Meteor Crater RV Park (check in at office for permission/access)1
2020-10-09 06:20GRIC-MAR-5 wetlands (access restricted, entry by permit only)1
2020-10-07 10:01CDO Wash--along Tucson National Golf Course1
2020-10-04 06:15Christopher Columbus Park1
2020-10-03 08:40Buenos Aires NWR--Arivaca Cienega1
2020-10-14 16:18Himmel Park1
2020-10-02 07:25Lakeside Park1
2020-10-03 06:17De Anza Trail--Tubac1
2020-10-07 06:55De Anza Trail--Carmen (Clark Crossing Rd)3
2020-10-06 13:30Santa Gertrudis Lane (foot access only)1
2020-10-10 12:29Lyman Lake SP1
2020-10-05 11:30Brown Canyon Ranch (opened 2011)1
2020-10-16 05:57Onavas (pueblo)1
2020-10-05 07:11Camino al Cocodrilario4
2020-10-18 07:53Texas A&M Univ.--The Gardens/Leach Gardens1
2020-10-24 08:30Ranch North Woods Preserve1
2020-10-17 06:29Area de Protección de Flora y Fauna Nahá1
2020-10-09 12:15Panajachel--Playa Juncanyá1
2020-10-17 09:52Reserva Natural y Comunidad La Paz--llegada al río1
2020-10-17 10:40Finca La Gracia1
2020-10-03 12:28Scioto Grove Metro Park2
2020-10-23 16:09The Dump1
2020-10-05 10:50Sapodillas--Hunting Caye1
2020-10-03 09:00Tinkers Creek State Nature Preserve1
2020-10-25 14:48Cementerio Santa Elena1
2020-10-25 15:57PN Azul Meámbar--Sendero La Naturaleza (zona de amortiguamiento)1
2020-10-05 17:09Siguatepeque--Sector Cruz Grande3
2020-10-03 06:40Aldea Las Anonas [Carretera de 6 Kms]1
2020-10-24 06:55Carretera de tierra al sureste de La Venta del Sur1
2020-10-17 15:49Zamorano Univ.--Campus Farms and River 740-815 msnm1
2020-10-18 09:40Merritt Island NWR--Oak & Palm Hammock Trails1
2020-10-08 11:39Indian River Lagoon Preserve State Park1
2020-10-17 12:56Teague Hammock1
2020-10-03 11:43South Mill Creek Lake1
2020-10-03 07:30Winding Waters Natural area1
2020-10-15 06:01Habitarte - Reserva El Bajo1
2020-10-03 11:00Burnt Mill Creek1
2020-10-15 08:23Heisey Rd. Old Orchard1
2020-10-17 06:01Lakeside School catfish farm1
2020-10-17 03:14Bijagua--Tapir Valley (restricted access)2
2020-10-30 10:03Refugio mixto Caño Negro2
2020-10-25 05:10Jacó--Humedales Quebrada Bonita1
2020-10-13 06:07UNA--Centro Recreativo1
2020-10-02 07:45Lomas Verdes1
2020-10-04 12:21Las Brisas Nature Reserve1
2020-10-05 07:19Charagré1
2020-10-01 09:38Oak Lawn Cemetary1
2020-10-02 08:35Lighthouse Point Park1
2020-10-13 10:46Camino a La Mesa1
2020-10-17 07:15Altos del Maria--Elevación 900-1100 msnm1
2020-10-07 11:45Pipeline Road (entrance to Juan Grande creek)1
2020-10-17 15:06Punta Chame--Fangales de Claridad1
2020-10-17 15:14Tocumen Marsh1
2020-10-17 13:04Cementerio de Yaviza3
2020-10-09 08:10RNA Paujil (Dept. Boyaca)2
2020-10-17 05:31Pauxi pauxi ProAves Reserve1
2020-10-13 09:20Bubali Bird Sanctuary1
2020-10-17 07:54Divi Links Round About1
2020-10-11 06:32Finca Los Cactos1
2020-10-07 06:00Humedal Santa María del Lago1
2020-10-04 12:17Petit-Cap1