What is a bushel of feathers?

A bushel of feathers is a unit of measurement used to quantify a volume of feathers, equivalent to approximately 8 gallons or 35.2 liters. While the term "bushel" traditionally refers to agricultural produce, such as grains or fruits, it can technically apply to any bulk material, including feathers. However, due to the lightweight and fluffy nature of feathers, a bushel would contain a large number of them, making it an unusual and impractical measurement for such a material. The phrase might also be used metaphorically to illustrate a large quantity of something.