The Eastern Siberian species of the Golden Plover (Pluvialis dominica fulva) migrates from Alaska to Hawaii for the winter. This 2500 mile journey requires non-stop flapping with no rest whatsoever because there are no islands in-between. The flight time is 88 hours, and requires an estimated 250,000 continuous flaps.
Prior to embarking, the Golden Plover puts on an additional 50% of weight (about 70 grams) in a short period of time. This extra fat serves as a source of fuel.
But wait! There is a slight problem facing our feathered friends!