Nest build fresh nests daily out of leaves and other vegetation in which they sleep at night. They sometimes also build nests during the day for resting in. The smaller species of gorilla build their nests in trees, while the larger are confined to the ground. Nests of the western gorilla, the largest species, measure about in diameter. Some species of frog build nests ranging from simple to modest complexity. Many stream-dwelling frogs lay their eggs in a gelatinous mass which they attach to underwater vegetation. The jelly structure prevents the eggs from washing away. Fish engage in nest building activities
Build to stock Build to stock Build to stock, or make to stock, often abbreviated as BTS or MTS, is a build-ahead production approach in which production plans may be based upon sales forecasts and/or historical demand. BTS is a usually associated with the industrial revolution mass production techniques, where in anticipation of demand vast quantities of goods are produced and stocked in warehouses. Build to stock is frequently considered as an appropriate solution for products where there are few product lines and long changeover times between costly products. Some firms build all their products to order while others build them to stock.