The process in which birds spread oil on their feathers using their beaks is called a. preening c. brooding b. molting d. none of the above

While preening, birds spread this oil to each feather so they are evenly coated and protected. Some types of birds, including owls, pigeons, parrots and hawks, lack a uropygial gland. Instead, these birds have specialized feathersthat disintegrate into powder down, which serves the same purpose as preen oil

Tamarind can be grown on homesteads, plantations, and wasteland or as a forest tree. methods of propagating tamarind there are two methods of propagating tamarind trees: seed propagation and vegetative propagation. seed propagation: it involves the collection, preparation and direct planting of the seed.answer from google full credit to google.