This survey was conducted on Gyodong, Seokmo, and Boleum Islands during the spring, summer, and autumn in 2009. In these three islands, observed birds were total 177 species, 71,165 individuals; 112 species, 36,242 individuals in Gyodong Is., 111 species, 22,754 individuals in Seokmo Is., and 137 species, 12,169 individuals in Boleum Is., respectively. Breeding birds in three islands were 30 species (Podiceps ruficollis, Charadrius dubius, Larus crassirostris, Larus cachinnans, Egretta alba, Egretta intermedia, Egretta garzetta, Bubulcus ibis, Ardeola bacchus, Nycticorax nycticorax, Platalea minor, Anas poecilorhyncha, Falco tinnunculus, Streptopelia orientalis, Phasianus colchicus, Dendrocopos kizuki, Dendrocopos major, Hirundo rustica, Motacilla alba, Lanius bucephalus, Phoenicurus auroreus, Monticola solitarius, Paradoxornis webbianus, Phylloscopus coronatus, Parus palustris, Parus major, Parus varius, Passer montanus, Sturnus cineraceus, Pica pica). Among observed birds, endangered species designated by Ministry of Environment in Korea were Egretta europhotes, Falco peregrinus, and Platalea minor belonging to level I, and Anas formosa, Anser cygnoides, Haematopus ostralegus, Gallicrex cinerea, Buteo buteo, Pernis ptilorhynchus, Falco amurensis, Falco subbuteo, Bubo bubo, Numenius madagascariensis, Accipiter gularis, Accipiter gentilis, Anser fabalis, Ixobrychus eurhythmus, Buteo hemilasius, Grus monacha, and Anser erythropus belonging to level II, respectively.