2011년 2월부터 2012년 1월까지 제주특별자치도 서귀포시 하원동 하논분화구 습지에서 출현하는 조류를 조사하였다. 관찰된 조류는 모두 51종 798개체가 확인되었으며, 계절별로 보면, 봄 32종 353개체, 여름 30종 451개체, 가을 28종 173개체, 겨울 23종 319개체였다. 우점종은 참새 200개체(25.06%), 까치 180개체(22.56%), 황로 56개체(7.02%), 흰뺨검둥오리 44개체(5.51%), 제비50개체(6.27%), 긴발톱할미새 36개체(4.51%) 순이었다. 종다양도는 전체적으로 2.646였으며, 월별로 봄 2.817, 여름 2.135, 가을 2.590, 겨울 1.703으로 나타났다. 법정 보호종으로는 매, 새매, 큰말똥가리, 두견이 4종이 확인되었다. 하논 분화구 습지가 야생조류의 안정적인 서식지로써의 기능을 유지하려면 단기적으로는 습지의 보전 ? 복원을 위한 습지보호구역 지정, 수질개선, 농약사용 자제, 시설물 철거, 습지보전에 대한 행정력 집중과 도민 공감대 형성 등이 이루어져야 한다. 장기적으로 국가프로젝트 채택을 통한 복원프로젝트 청사진 제시, 토지매입 및 식생 보원, 용천수 확보, 특정 구역에 대한 장기간 출입 금지 및 생물상 모니터링 등이 지속적으로 이루어져야 한다.
Birds shown in Hanon Crater-Wetland, Hawon-dong, Seogwipo City, Jeju Island were surveyed from February, 2011 to January, 2012. Observed birds were 51 species or 798 individuals in total. By season, 32 species or 353 individuals in spring, 30 species or 451 individuals in summer, 28 species or 319 individuals in fall and 23 species or 319 individuals in winter. Dominant Species were in the order of Eurasian Tree Sparrow (Passer montanus) as 200 individuals (25.06%), Black-billed Magpie (Pica pica) as 180 individuals (22.56%), Cattle Egret (Bubulcus ibis) as 56 individuals (7.02%), Spot-billed Duck (Anas poecilorhyncha) as 44 individuals (5.51%), Barn Swallow (Hirundo rustica) as 50 individuals (6.27%), Yellow Wagtail (Motacilla flava taivana) as 36 individuals (4.51%). Species Diversity was 2.646in total, and by season, 2.817 in spring, 2.135 in summer, 2.590 in fall, and 1.703 in winter. From rare birds, 4 species such as Peregrine Falcon (Falco peregrinus), Eurasian Sparrowhawk (Accipiter nisus), Upland Buzzard (Buteo hemilasius), and Lesser Cuckoo (Cuculus poliocephalus) were identified. For Hanon Crater-Wetland to maintain its function as a habitat for wild birds, as short-term solutions it should be designated as the wetland protection area for the preservation and recovery of the wetland, water quality should be improved, agricultural chemicals should be reduced, artificial structures should be removed, governmental supports for the wetland preservation should be made and there should be awareness among citizens. In the long term, recovery project blue print should be provided as a national project, land should be purchased and vegetation should be recovered, spring water should be secured, long-term entry prohibition for specific area should be administered and biology monitoring should be continuously performed.