What common human food offering can lead to a serious health issue known as 'angel wing' in waterfowl?

Answer

White bread

Offering inappropriate food items to waterfowl, including Wood Ducks, can lead to severe health consequences. White bread is specifically cited as a common mistake because it offers virtually no nutritional value, functioning as empty calories that fail to support proper development. Over-reliance on this food source can disrupt the balance of essential nutrients required for healthy bone growth, sometimes resulting in a physical deformity known as 'angel wing,' where the primary wing feathers grow improperly, often causing the wing to stick out awkwardly.

What common human food offering can lead to a serious health issue known as 'angel wing' in waterfowl?
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