Research studies on albatrosses and other soaring birds have found that the least intrusive geolocation tag placement, defined as the placement that minimizes interference with movement, is close to the center of the bird's back. While the placement increases drag when the birds dive into the water, it does not affect the birds’ ability to stay aloft for days at a time because the feathers of the back aren’t used for lift during soaring. However, the majority of studies on birds in general indicate that the least intrusive geolocation tag placement is under the tailfeathers, a placement that would cause great instability during flight but that doesn’t interfere with underwater movement.
Which of the following, if true, most helps to explain the exception noted above?
A) Albatrosses are much larger than other soaring birds, so geolocation tags make up less of their total body weight.
B) Geolocation tagging practices have changed over time to include smaller devices.
C) Soaring doesn’t involve the tailfeathers, so geotag placement there will not affect movement.
D) Albatrosses tend to expend less energy than other birds while soaring because of their large wingspan.
E) The majority of studies were done on penguins, which don’t fly but do spend much of their time hunting underwater.