In extreme cases, the stripped feathers may resemble sickly blue straws protruding from wings. Angel wing symptoms include stripped remiges (flight feathers) in the wrist area, or remiges protruding from wings at odd angles. The result is a wrist which is twisted outwards and unable to perform its usual function. Due to a high- calorie diet, especially one high in proteins and/or low in vitamin D, vitamin E, and manganese, one or both carpus (wrist) joints are delayed in their development relative to the rest of the wing for reasons unknown, if only one wing is affected, it is usually the left one. It has also been reported in goshawks, bustard chicks, and psittacine birds ( budgerigars, macaws, and conures). Males develop it more frequently than females. Angel wing, also known as airplane wing, slipped wing, crooked wing, and drooped wing, 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.

Angel devil big wings