I want to know the answer to the following question:
What is the process of removing feather parasites?
All the background I'm provided with is that "The bill is used to brush away foreign particles and to apply waxy secretions from the uropygial gland; these secretions protect the feathers' flexibility and act as an antimicrobial agent, inhibiting the growth of feather-degrading bacteria.". Is that enough to answer the question?