Animalia > Chordata > Aves > Passeriformes > Corvidae > Corvus > Corvus crassirostris

Corvus crassirostris (Thick-billed Raven)

Wikipedia Abstract

The thick-billed raven (Corvus crassirostris), a corvid from the Horn of Africa, shares with the common raven the distinction of being the largest bird in the corvid family, and indeed the largest of the most diverse bird order, the passerines. The thick-billed raven measures 64 cm (25 in) in length and weighs 1.5 kg (3.3 lb) on average. It has a very large bill that is laterally compressed and is deeply curved in profile giving the bird a very distinctive appearance. This bill is black with a white tip and has deep nasal grooves with only light nasal bristle covers.
View Wikipedia Record: Corvus crassirostris

EDGE Analysis

Uniqueness Scale: Similiar (0) 
1
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
11
 Unique & Vulnerable (100)
ED Score: 3.38321
EDGE Score: 1.47778
Learn more at EDGE of Existence programme

Attributes

Adult Weight [1]  2.502 lbs (1.135 kg)
Birth Weight [1]  30.1 grams
Female Weight [3]  2.502 lbs (1.135 kg)
Diet [2]  Carnivore (Invertebrates), Carnivore (Vertebrates), Herbivore
Diet - Ectothermic [2]  20 %
Diet - Endothermic [2]  20 %
Diet - Invertibrates [2]  40 %
Diet - Plants [2]  20 %
Forages - Understory [2]  20 %
Forages - Ground [2]  80 %
Clutch Size [4]  4
Mating Display [1]  Ground display
Snout to Vent Length [3]  24 inches (62 cm)

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Ethiopian montane forests Ethiopia, Eritrea, Somalia, Sudan Afrotropic Tropical and Subtropical Moist Broadleaf Forests
Ethiopian montane grasslands and woodlands Ethiopia, Eritrea Afrotropic Montane Grasslands and Shrublands
Ethiopian montane moorlands Ethiopia Afrotropic Montane Grasslands and Shrublands

Important Bird Areas

Biodiversity Hotspots

Name Location Endemic Species Website
Eastern Afromontane Burundi, Democratic Republic of Congo, Ethiopia, Eritrea, Kenya, Malawi, Mozambique, Rwanda, Saudi Arabia, Tanzania, Uganda, Yemen, Zimbabwe Yes

Range Map

External References

Citations

Attributes / relations provided by
♦ 1Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
♦ 2Hamish 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
♦ 3Nathan 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
♦ 4Jetz 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
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
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