What is another word for Uropygial Gland?
Pronunciation: [jˈʊ͡əɹəpˌɪd͡ʒəl ɡlˈand] (IPA) 
The uropygial gland, also known as the preen gland or oil gland, is a small gland located at the base of the tail in many bird species. It secretes a waxy substance that birds spread over their feathers during preening, which helps to waterproof and condition their plumage. In addition to uropygial gland, synonyms for this gland include preen gland, oil gland, sebaceous gland, wax gland, and caudal gland. These terms are often used interchangeably in scientific and ornithological literature to refer to this important gland in birds. Regardless of the term used, the uropygial gland plays a vital role in maintaining healthy feathers and efficient flight.
