Emperor penguins, for example, can travel up to 100 kilometers (60 miles) a day to find open water where they can hunt for food. On average, they'll cover about 1,000 kilometers (620 miles) over their foraging trips, which can last for 2–3 months.
In 2015, researchers reported the furthest recorded journey by a breeding female. The bird, named HB42, left her colony in Antarctica and swam all the way to South Georgia, about 2,000 kilometers (1,240 miles) away.