Wattled Crane
| Wattled Crane | |
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| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Gruiformes |
| Family: | Gruidae |
| Genus: | Bugeranus Gloger, 1842 |
| Species: | B. carunculatus |
| Binomial name | |
| Bugeranus carunculatus (Gmelin, 1789) |
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The Wattled Crane, Bugeranus carunculatus is a large bird found in Africa south of the Sahara Desert. It is monotypical for its genus.
At a height of up to 175 centimetres (5.7 ft), it is the largest crane in Africa and is the second tallest species of crane, after the Sarus Crane. The wingspan is 230–260 centimetres (7.5–8.5 ft), the length is typically 120 centimetres (3.9 ft) and weight is 6.4–7.9 kilograms (14–17 lb) in females, 7.5–9 kilograms (17–20 lb) in males.[2] The back and wings are ashy gray. The feathered portion of the head is dark slate gray above the eyes and on the crown, but is otherwise white, including the wattles, which are almost fully feathered and hang down from under the upper throat. The breast, primaries, secondaries, and tail coverts are black. The secondaries are long and nearly reach the ground. The upper breast and neck are white all the way to the face. The skin in front of the eye extending to the base of the beak and tip of the wattles is red and bare of feathers and covered by small round wart-like bumps. Wattled Cranes have long bills and black legs and toes. Males and females are virtually indistinguishable, although males tend to be slightly larger.
Juveniles have tawny body plumage, lack the bare skin on the face, and have less prominent wattles.
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[edit] Range
The Wattled Crane occurs in eleven sub-Saharan countries in Africa, including an isolated population in the highlands of Ethiopia. More than half of the world’s Wattled Cranes occur in Zambia, but the single largest concentration occurs in the Okavango Delta of Botswana. Wattled Cranes are thought to have historically ranged over a much larger area including coastal West Africa.[3]
[edit] Diet
All cranes are omnivorous. The principal food of the Wattled Crane is mainly aquatic eating the tubers and rhizomes of submerged sedges and water lilies and also insects, snails and amphibians.
[edit] Threats
Destruction, alteration, and degradation of wetland habitats constitute the most significant threats to the Wattled Crane. Hydroelectric power projects and other water development have caused fundamental changes in the species expansive floodplain habitats, and their most important food source Eleocharis spp. Human and livestock disturbance, powerline collisions, mass aerial spraying of tsetse flies, and illegal collection of eggs, chicks and adults for food are also significant threats to Wattled Cranes throughout their range.
The Wattled Crane is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.[4] It is listed as Vulnerable in the IUCN Red List.[1]
[edit] Notes
- ^ a b Butchart, S. & Taylor, J. (2008) Grus carunculatus In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.1. www.iucnredlist.org Retrieved on 31 July 2010.
- ^ "Wattled Crane". savingcranes.org. International Crane Foundation. http://www.savingcranes.org/wattledcrane.html. Retrieved 31 July 2010.
- ^ "Wattled Crane". birdlife.org. Birdlife International. http://www.birdlife.org/datazone/search/species_search.html?action=SpcHTMDetails.asp&sid=2793&m=0. Retrieved 31 July 2010.
- ^ "Agreement on the Conservation of African-Eurasian Migratory Waterbirds: Annexe 2". unep-aewa.org. AEWA. http://www.unep-aewa.org/documents/agreement_text/eng/pdf/aewa_agreement_text_2009_2012_annex2.pdf. Retrieved 31 July 2010.
[edit] References
- Johnsgard PA. 1983. Cranes of the world. Bloomington: Indiana University Press. Meine CD, Archibald GW. 1996.
- The Cranes: status survey and conservation action plan. Gland, Switzerland: IUCN.
- Wattled Crane (Bugeranus carunculatus) from Cranes of the World, by Paul Johnsgard
[edit] External links
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