What is "down" in the context of poultry?

In the context of poultry, "down" refers specifically to the soft, fluffy covering that is found on the bodies of young chicks. This layer serves several important functions. Primarily, down provides insulation to help keep the chicks warm, as they can be particularly vulnerable to cold temperatures shortly after hatching. Unlike the outer feathers that develop later, down feathers are soft to the touch and have a unique structure that allows for better insulation while still being lightweight. This stage of feather development is crucial for the survival and well-being of young birds as they transition from the warm environment of the egg to the outside world. It’s important to recognize that down differs significantly from other types of feathers, which have different structures and purposes.