- 10:06:19 he starts preening, only shortly
- observing the surrounding and resting, preening
- using the uropygial gland, informally known as the preen gland or the oil gland
(The uropygial gland secretes a thick, transparent, complex oil (preening oil) that consists of diester waxes (uropygiols), fats, and fatty acids. The oil secreted by the uropygial gland performs many functions, including waterproofing and maintaining the suppleness of the skin, feathers, and bill. The oil may have an antibacterial function. During preening, a bird transfers this oil to its feathers by rubbing its head and bill against the oil gland and then spreading the oil over the rest of its feathers.)
waiting, waiting ... and resting
