About MAEDA TAKU
About 農業研究センター・鳥害研究室
About YOSHIDA HOSHIKO
About 農業研究センター・鳥害研究室
About 日本鳥学会誌
About paddy field
About Ibaraki prefecture
About lake
About Aves
About impounding
About feed(fodder)
About waterfowl
About wintering
About field study
About Nelumbo
About habitat density
About Pisces
About Amphibia
About habitat environment
About biological interaction
About 霞が浦
About Interaction between dissimilar organisms
About Ecosystems
About 水田
About 冬期湛水
About 鳥類