Angel wing
Angel wing, also known as airplane wing,[1] slipped wing, crooked wing, and drooped wing,[citation needed] 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).[2]
Description
[edit]The theoretical causes of angel wing are genetics, the excessive intake of carbohydrates[3] and proteins,[1][4] together with insufficient intake of vitamin E,[4] low dietary calcium[1] and manganese deficiency.[1] However, scientific studies have not proven any link between bread and angel wing,[citation needed] and some experts and academics deny the connection.[5]
References
[edit]- ^ a b c d "Avian Nutrition Glossary". LafeberVet. December 2014. Retrieved 8 August 2022.
- ^ Zsivanovits, Petra; Monks, Deborah J.; Forbes, Neil A (March 2006). "Bilateral Valgus Deformity of the Distal Wings (Angel Wing) in a Northern Goshawk (Accipiter gentilis)". Journal of Avian Medicine and Surgery. 20 (1): 21–26. doi:10.1647/1082-6742(2006)20[21:BVDOTD]2.0.CO;2.
- ^ "Here's Another Good Reason Not to Feed Bread to Ducks in Spokane Park Ponds". News. City of Spokane. Archived from the original on 1 November 2013. Retrieved 29 October 2013.
- ^ a b "Warning Not to Feed White Bread to Ducks in Stratford". BBC Local Coventry and Warwickshire. 25 October 2010. Retrieved 29 October 2013.
- ^ "Official Statement on Bread from the Queen's Swan Marker". The Swan Sanctuary Charity. 13 November 2018. Retrieved 15 April 2024.
External links
[edit]
Media related to Angel wing (waterfowl) at Wikimedia Commons
