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.
Mandarin Ducks The Mandarin Duck (Aix galericulata), or just Mandarin, is a medium-sized perching duck, closely related to the North American Wood Duck. Mandarin Ducks, which are referred to by the Chinese as Yuan-yang (simplified Chinese: é¸³é¸¯; traditional Chinese: é´é´¦; pinyin: yuÄn yÄng), are frequently featured in Oriental art and are regarded as a symbol of conjugal affection and fidelity.