@article{oai:niigata-u.repo.nii.ac.jp:00028264,
 author = {中津, 弘 and 長嶋, 直幸 and 本間, 航介 and 永田, 尚志},
 journal = {新潟大学農学部研究報告, 新潟大学農学部研究報告},
 month = {Feb},
 note = {新潟県佐渡島東部の丘陵地の中で、森林内の放棄棚田を復元しているキセン城地区の鳥類について繁殖期の調査を行った。３回の調査で計30種の鳥類を確認し、ヒヨドリが最も優占していることが明らかになった。他方、島内の山麓谷戸に多いカワラヒワやスズメは観察されなかったが、森林内に点在する農地的なパッチ状生息地であることや、人家集落が近傍に存在しないことがその要因であろう。過去60年程度で棚田が激減したこの地域の中で、このような環境の保全管理が行われているキセン城の鳥類群集は、山麓部のものとは異なる特徴を有していると考えられた。, We conducted bird surveys in Kisenjo, on a hilly region on Sado Island, Niigata, Japan, from April to June, 2015. We counted birds at four fixed-radius points, and recorded all bird species that occurred in this site. 30 species of birds were recorded, and the Brown-eared Bulbul (Hypsipetes amaurotis) was the most abundant species. The most of the land in the vicinity of the study site is forested, with only few patches of small open spaces such as rice paddies and wetlands, as majority of cultivated lands have been deserted in past six decades. There are no residential areas, and some fallow lands have been restored as wetlands in the study site in recent years. This patch-matrix structure appeared to exclude some bird species from the site, like the Oriental Greenfinch (Chloris sinica) and Eurasian Tree Sparrow (Passer montanus) that are abundant on lowland edge habitats on Sado Island. The result of this study suggests that such habitat management could produce a unique bird community.},
 pages = {11--15},
 title = {小佐渡丘陵キセン城地区における繁殖期の鳥類相},
 volume = {68},
 year = {2016}
}