Animalia > Chordata > Aves > Passeriformes > Corvidae > Corvus > Corvus caurinus

Corvus caurinus (Northwestern Crow)

Wikipedia Abstract

The northwestern crow (Corvus caurinus) is an all-black passerine bird of the crow genus native to the northwest of North America. It is very similar to the more western forms of the widespread American crow (Corvus brachyrhynchos), but it averages slightly smaller (33–41 cm in length) with proportionately smaller feet and a slightly more slender bill. This taxon is reliably identified by range only.
View Wikipedia Record: Corvus caurinus

EDGE Analysis

Uniqueness Scale: Similiar (0) 
0
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
8
 Unique & Vulnerable (100)
ED Score: 2.58417
EDGE Score: 1.27653
Learn more at EDGE of Existence programme

Attributes

Clutch Size [7]  5
Clutches / Year [4]  1
Global Population (2017 est.) [3]  770,000
Incubation [4]  18 days
Maximum Longevity [4]  17 years
Snout to Vent Length [2]  15 inches (37 cm)
Water Biome [1]  Coastal
Adult Weight [2]  390 grams
Birth Weight [4]  14 grams
Female Weight [6]  368 grams
Male Weight [6]  415 grams
Weight Dimorphism [6]  12.8 %
Breeding Habitat [3]  Temperate western forests
Wintering Geography [3]  Non-migrartory
Wintering Habitat [3]  Temperate western forests
Diet [5]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore, Frugivore
Diet - Endothermic [5]  10 %
Diet - Fish [5]  10 %
Diet - Fruit [5]  30 %
Diet - Invertibrates [5]  30 %
Diet - Scavenger [5]  20 %
Forages - Understory [5]  20 %
Forages - Ground [5]  80 %
Female Maturity [4]  2 years
Male Maturity [4]  2 years

Ecoregions

Protected Areas

Range Map

External References

Citations

Attributes / relations provided by
♦ 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at animaldiversity.org
♦ 2Nathan 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
♦ 3Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
♦ 4de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 5Hamish 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
♦ 6Johnston DW & Williamson FSL (1960) Heart weights of North American crows and ravens. Wilson Bull. 72, 248-252
♦ 7Jetz 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
Abstract provided by DBpedia licensed under a Creative Commons License
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