In order to maintain their body temperatures, Chickadees must take in a large number of food calories which will be metabolized for body heat. Calder (1974) notes that Black-capped Chickadees ... must eat continuously during short daylight hours to stoke their metabolic fires.
Industrial sewing machines are the best option for sewing upholstery-grade fabrics such as vinyl and leather because these machines are designed to handle thicker fabrics. Industrial machines use heavier upholstery thread and often sturdier needles which penetrate the material cleanly.
machine for separating cotton from seeds, 1796, American English, used earlier of other machineries, especially of war or torture, from Middle English gin ingenious device, contrivance (c. 1200), from Old French gin machine, device, scheme, shortened form of engin (see ).