This winter I've been watching the many interesting species of birds that use the Pacific Flyway to make their seasonal migration. In fact, it's been shocking to see the huge diversity of species that pass through. It got me thinking about just how far some species are willing to fly each and every year. We know that many species of birds make amazing long-distance migrations, but for some species, the mileage they travel every year is staggering. In fact, the record-holder flies the equivalent of three trips to the moon and back over the span of its lifetime.
Check out the six longest migrations of birds on the following pages; plus, find out which unexpected species made the world's longest non-stop flight.