During fall migration, a Bar-tailed Godwit like this one will fly over the Pacific Ocean, making a non-stop flight of 7,000 miles from Alaska to New Zealand. These amazing birds can achieve their epic journeys only after fattening up – along the coast of Alaska in fall, or along the Yellow…

For shorebirds like Bar-tailed Godwits, Black-bellied Plovers, and Dunlin, mud matters. Few mudflats are more important than those of the Yellow Sea along the coast of China, and North and South Korea, where more than 70 species of shorebirds rest and feed. For several species of…