Personal grooming
Videos
Grooming is the practice of cleaning and maintaining parts of the body. It is a species-typical behavior.
Summer Morning (at Spadarvet), by Carl Larsson, 1908
Preening male ruff
Mutually grooming ponies at Turf Hill, New Forest, U.K.
A domesticated cat grooming
Preening
Videos
Preening is a maintenance behaviour found in birds that involves the use of the beak to position feathers, interlock feather barbules that have become separated, clean plumage, and keep ectoparasites
When preening, a bird (such as this red lory) draws individual feathers through its beak, realigning and re-interlocking the barbules.
Greater flamingo preening in Camargue, France
A humboldt penguin preening at Copenhagen Zoo, Denmark
Birds, like this two-barred crossbill, typically use their beak to gather preen gland oil from the uropygial gland.