Jeju is a volcanic island south of the Korean Peninsula. It is a popular tourist destination for both Koreans and oversea visitors due to its mild climate and beautiful coastal scenery, lush nature and fresh seafood.
My wife and I spent a week in mid June driving around the island, mainly to visit the waterfalls, nature parks and touristy spots. I searched through eBirds for birding hot spots close to where we stay or enroute. Luckily for us, most of the hot spots were within short driving distances from our hotels. No problems getting here using the rental car’s GPS.
These are some of the sites that we visited: Ongpo-ri, an estuarine wetland and Hallim Park in the Eastern part of the island; Cheonjieon Waterfall Forest Park and Saeseom Island at Seogwipo in the South: Hado-ri Bird Sanctuary, Seongsan Wetlands and Jondal Bay in the West and the Ramsar site at Dongbaek Dongsan in the north.
Unfortunately June is not the best time to bird as most migrants have gone up north. But it is the breeding season for most of the passerines. I ended up with only 35 species ( Checklist at the bottom) but we still enjoy visiting these birding sites for its natural beauty.
Reference: Wikipedia. eBirds, Birdlife International. Birding Korea. Birds of Japan.