The harvesting of the precious Elphen Eggs which come to Earth as Starfall. A task to be carried out with great reverence and honour by the prime and fittest of the Elphen Tribe. To ensure the continuation of their race. It is always carried out to the accompaniment of traditional Elphen singing, songs shared between those involved in the harvesting and the Nest Siren. Most flying is done at night to avoid the possibility of accidental observation by humans. During the day the Swarm hides in the tree tops and takes to the wing only after the leaves have lost their red edges, the highlight of the setting sun. During the dark hours the Swarm never rests, individual Elphen take it in turn to transport their precious cargo nestward.