The time required to do this is referred to as the synodic period of revolution, as opposed to the sidereal period of revolution, which is the time required for a planet to move once around the Sun relative to the stars and is equal to the orbital period.
Mandarin ducks demand very specific breeding sites preferring to nest near water and, ideally, with the nest box accessed from the water, ie: facing a pond or lake, and raised on a platform a metre or more above ground level, reached by a ramp. secure enclosure is essential to keep the Mandarin ducks in and keep out potential predators such as foxes, hawks, crows, and domestic cats and dogs. Pairs usually are allowed a 2m x 2m pen, preferably with a small pond.
Ducks look different Ducks of different breeds look different. Some are very colorful like the Perching ducks. They are called Perching ducks because they like to perch or rest in trees. Perching ducks are found in North America, tropical regions of Asia, Africa, Central and South America. Examples of Perching ducks are the Wood Ducks, Muscovy Ducks and Mandarin Ducks.