Angel wing
{{Short description|Disorder of birds causing misshapen wings}}
{{other uses}}
Image:Angelwing.jpg with angel wing]]
Image:Angelwing2.jpg with angel wing]]
Angel wing, also known as airplane wing,{{Cite web |title=Avian Nutrition Glossary |date=December 2014 |url=https://lafeber.com/vet/avian-nutrition-glossary/ |publisher=LafeberVet |access-date=8 August 2022}} slipped wing, crooked wing, and drooped wing,{{Citation needed|reason=These terms are not in the above glossary|date=August 2022}} is a syndrome that affects primarily aquatic birds, such as geese and ducks, in which the last joint of the wing is twisted with the wing feathers pointing out laterally, instead of lying against the body. Males develop it more frequently than females. It has also been reported in goshawks, bustard chicks, and psittacine birds (budgerigars, macaws, and conures).{{Cite journal |last1=Zsivanovits |first1=Petra |last2=Monks |first2=Deborah J. |last3=Forbes |first3=Neil A |date=March 2006 |title=Bilateral Valgus Deformity of the Distal Wings (Angel Wing) in a Northern Goshawk (Accipiter gentilis) |journal=Journal of Avian Medicine and Surgery |volume=20 |issue=1 |pages=21–26 |doi=10.1647/1082-6742(2006)20[21:BVDOTD]2.0.CO;2}}
Description
The theoretical causes of angel wing are genetics, the excessive intake of carbohydrates{{cite web |title=Here's Another Good Reason Not to Feed Bread to Ducks in Spokane Park Ponds |url=http://www.spokanecity.org/services/articles/?ArticleID=1850 |url-status=dead |archive-url=https://web.archive.org/web/20131101173844/http://www.spokanecity.org/services/articles/?ArticleID=1850 |archive-date=1 November 2013 |access-date=29 October 2013 |publisher=City of Spokane |department=News}} and proteins,{{cite web|title=Warning Not to Feed White Bread to Ducks in Stratford |url=http://news.bbc.co.uk/local/coventry/hi/people_and_places/nature/newsid_9124000/9124132.stm |publisher=BBC Local Coventry and Warwickshire |date=25 October 2010 |access-date=29 October 2013}} together with insufficient intake of vitamin E, low dietary calcium and manganese deficiency. While there is little direct evidence for a link between the consumption of bread and the development of angel wing{{Cite journal |last1=Arican |first1=Mustafa |last2=Parlak |first2=Kurtuluş |last3=Yalçin |first3=Mustafa |date=March 2019 |title=Angel Wings Syndrom in Swans (Cygnus cygnus and Cygnus atratus) |journal=Kafkas Universitesi Veteriner Fakultesi Dergisi |volume=25 |issue=6 |pages=873-877 |doi=10.9775/kvfd.2019.21995|doi-access=free }} some experts and academics deny the connection.{{Cite web |title=Official Statement on Bread from the Queen's Swan Marker |url=https://www.theswansanctuary.org.uk/cause/official-statement-bread-queens-swan-marker/ |publisher=The Swan Sanctuary Charity |date=13 November 2018 |access-date=15 April 2024}}
References
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External links
- {{Commons category inline|Angel wing (waterfowl)}}