Animalia > Chordata > Aves > Passeriformes > Tyrannidae > Empidonax > Empidonax occidentalisEmpidonax occidentalis (Cordilleran Flycatcher)Language: Spanish The Cordilleran flycatcher (Empidonax occidentalis) is a small insect-eating bird. It is a small Empidonax flycatcher, with typical length ranging from 13 to 17 cm. Adults have olive-gray upperparts, darker on the wings and tail, with yellowish underparts; they have a conspicuous teardrop-shaped white eye ring, white wing bars, a small bill and a short tail. Many species of this genus look closely alike. The best ways to distinguish species are by voice, by breeding habitat, and by range. This bird is virtually identical to the Pacific-slope flycatcher. These two species were formerly considered a single species known as western flycatcher. The Pacific-slope flycatcher is a breeding bird of the Pacific Coast forests and mountain ranges from California to Alaska; the Cordilleran is a breedi |
Uniqueness Scale: Similiar (0) Unique (100) Uniqueness & Vulnerability Scale: Similiar & Secure (0) Unique & Vulnerable (100) ED Score: 3.20644 EDGE Score: 1.43662 |
Adult Weight [1] | 11 grams | Birth Weight [1] | 2 grams | | Breeding Habitat [2] | Temperate western forests, Mexican pine-oak forests | Wintering Geography [2] | Mexican Highlands | Wintering Habitat [2] | Mexican pine-oak forests | | Diet [3] | Carnivore (Invertebrates), Frugivore | Diet - Fruit [3] | 10 % | Diet - Invertibrates [3] | 90 % | Forages - Mid-High [3] | 40 % | Forages - Understory [3] | 30 % | Forages - Ground [3] | 30 % | | Clutch Size [5] | 4 | Clutches / Year [1] | 1 | Fledging [1] | 16 days | Global Population (2017 est.) [2] | 2,900,000 | Incubation [4] | 15 days | Maximum Longevity [1] | 7 years | | Female Maturity [1] | 0 years 12 months | Male Maturity [1] | 1 year |
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Name |
IUCN Category |
Area acres |
Location |
Species |
Website |
Climate |
Land Use |
Black Canyon of the Gunnison National Park |
II |
12551 |
Colorado, United States |
|
|
|
|
Bryce Canyon National Park |
II |
36348 |
Utah, United States |
|
|
|
|
Cabrillo National Monument |
V |
149 |
California, United States |
|
|
|
|
Capital Reef National Park |
II |
243722 |
Utah, United States |
|
|
|
|
Central Plains Biosphere Reserve |
|
15345 |
United States |
|
|
|
|
Colorado National Monument |
III |
20420 |
Colorado, United States |
|
|
|
|
Curecanti National Recreation Area |
V |
31032 |
Colorado, United States |
|
|
|
|
Dinosaur National Monument |
III |
203307 |
Colorado, Utah, United States |
|
|
|
|
Fort Bowie National Historic Site |
III |
1004 |
Arizona, United States |
|
|
|
|
Glen Canyon National Recreation Area |
V |
1087901 |
Arizona, Utah, United States |
|
|
|
|
Grand Canyon National Park |
II |
1210128 |
Arizona, United States |
|
|
|
|
Great Basin National Park |
II |
77367 |
Nevada, United States |
|
|
|
|
Hovenweep National Monument |
V |
770 |
Colorado, Utah, United States |
|
|
|
|
Jornada Biosphere Reserve |
Ib |
30913 |
New Mexico, United States |
|
|
|
|
Mesa Verde National Park |
II |
40098 |
Colorado, United States |
|
|
|
|
Reserva de la Biosfera Sierra Gorda Biosphere Reserve |
VI |
955579 |
Queretaro, Mexico |
|
|
|
|
Shortgrass Steppe LTER Site Long Term Ecological Research |
|
|
Colorado, United States |
|
|
|
|
Yellowstone Biosphere Reserve |
II |
2196863 |
Idaho, Montana, Wyoming, United States |
|
|
|
|
Zion National Park |
II |
135667 |
Utah, United States |
|
|
|
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Attributes / relations provided by ♦ 1Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109 ♦ 2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018. ♦ 3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027 ♦ 4Incubation period and immune function: a comparative field study among coexisting birds, Maria G. Palacios, Thomas E. Martin, Oecologia (2006) 146: 505–512 ♦ 5Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303 Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database |
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0
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