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.

It has been 10 years since the first construction of wildlife crossing passage by the Republic of Korea's Ministry of Environment in 1998. The objective of this study was to suggest effective road-kill policy based on analysis of research reports and countermeasures. The research contents and methods of 26 reports published by government and public institutes were reviewed. The results were as follows. First, Korea has 379 wildlife crossing structures, the fourth most abundant number in the world, meaning the government's aggressive policy. Second, 17 reports introduced abroad case and 14 reports suggested fundamental guidelines, however, only 1 or 2 reports repeated field survey for wildlife movement around roads and crossing structure. Consequently, we inferred that Korea showed active efforts to construct countermeasures but passive to conduct fundamental field research. We suggest, therefore, road-kill policy of Korea should more invest for wide and deep field survey to understand wildlife moving habit and to monitor crossing structures.