Guided Birding Tours for transit passengers in Incheon airport Do you have a long layover in Incheon airport?That's a good chance to try birding in the coast of Yellow Sea. The coast of Incheon is one of the biggest mud flat in the world and there are big rice fields around Incheon. You can see lots of shorebirds, black-faced spoonbills, Both of bean geese and red-crowned cranes within 1.5 hours..