What aspect of feather care does "bloom" indicate?

The term "bloom" refers to a natural oil that comes from a bird's skin and serves to protect and maintain the health of its feathers. This oil helps to keep the feathers in good condition, ensuring they remain waterproof and insulated. When feathers have a healthy bloom, it indicates that they have been properly cared for and that the bird is likely in good health overall. A lack of bloom can suggest issues such as poor feather maintenance or underlying health problems, but the presence of bloom specifically points to the overall health and maintenance of the feathers themselves. This acknowledgment of feather care underscores the importance of proper husbandry and nutrition in falconry, emphasizing that healthy feathers are an indicator of a bird's well-being. Other options refer to issues like dirt or color patterns, which do not capture the essence of what "bloom" signifies in the context of feather care.