The nutrition of bird's nest is different from that of bird's nest. Bird's nests are more nutritious than bird's nests. Bird's nests that are in the shape of a nest or a boat are selected by bird's nest farmers from the harvested bird's nests, and then after proper hair picking, they are called marigolds. If the bird's nest is damaged during picking, processing or transportation, or if the bird's nest is unable to form a complete nest or boat shape after picking the hairs, this part of the bird's nest is called swiftlet bars.