the bar-tailed godwit is a type of shorebird that makes an annual migration from alaska to new zealand and back. the birds make each 11,500-kilometer (7,145-mile) trip by flying over the pacific ocean in about nine days, depending on weather, wind speed, and direction of travel. one bird was observed to make the entire journey uninterrupted, a feat that is comparable to a human running a nonstop seven-day marathon at 70 kilometers per hour (43.5 miles per hour). would you expect the flight (breast) muscles of bar-tailed godwits to use mainly aerobic respiration or fermentation? explain your answer.