全長オス120センチメートル、メス90センチメートル。体上面は黄褐色で、黒い斑点が入る。顔から頸部・腹部にかけては白い。雨覆や風切羽の先端は白い。後肢の色彩は淡黄色。オスは頭頂が黒く、胸部に黒い横縞が入る。種小名nigricepsは「黒い頭の」の意。メスは頭頂が褐色。頸部は灰色。胸部の横縞は不明瞭か、横縞がない。
Toshihiro Kose, Ichiro Sakata, “Identifying technology convergence in the field of robotics research”,Technological Forecasting & Social Change (In press, corrected proof, Available online 19 September 2018)K. Asatani, F. Toriumi, M. Ochi, J. Mori, I. Sakata, “Detecting Interpersonal Relationships in Large-Scale Railway Trip Data”, Journal of Computational Social Science 1 (2018): s42001-018-0021-1K. Asatani, J. Mori, M. Ochi and I. Sakata, “Detecting trends in academic research from a citation network using network representation learning”, PLOS ONE 13 (5) (2018): e0197260K.Yamaguchi, P. Reubroycharoen, M. Sugiyama, D. Wiwattanadate, H. Yoshikawa and I. Sakata, “Cross-border power trade with Myanmar: Barriers and their removal from the Thai’s perspective”, Int.J.Public Policy 14 (1)(2018)pp30-49W.Gong, B.Fugetsu, Z. Wang, I.Sakata et al., ”Carbon nanotubes and manganese oxide hybrid nanostructures as high performance fiber supercapacitors”, Commschem 1:16 (2018)s42004-018-0017-zM. Isonuma, T. Fujino, J.Mori, Y. Matsuo, I. Sakata, “Extractive summarization using multi-task leaning with document classification” Conference on Empirical Methods in NLP (EMNLP), Copenhagen, Denmark (7-11 September 2017)Y.Wang, B.Fugetsu, Z.wang, W. Gong, I.Sakata, S.Morimoto, Y.Hashimoto, M.Endo, M. Doresselhaus, M.Terrones, “Nitrogen-doped porous carbon monoliths from polyacrylonitrile (PAN) and carbon nanotubes ad electrodes for supercapacitors”, Scientific reports 7 (2017): 40259 (IF=5.228)T. Hamasaki, G. Harada, N. Nakamichi, S. Kabayama,K. Teruya, B. Fugetsu, W. Gong, I. Sakata, S. Shirahata, “Electrochemically reduced water exerts superior reactive oxygen species scavenging activity in HT1080 cells than the equivalent level of hydrogen-dissolved water”, PLOS ONE | DOI:10.1371/journal.pone.0171192 February 9, 2017 (IF=3.057)H. Sasaki, T. Hara and I. Sakata, “Identifying Emerging Research Related to Solar Cells Field Using a Machine Leaning Approach”, Journal of Sustainable Development of Energy, Water and Environment Systems 4(4) (2016), pp.418-429.Y. Wang, B. Fugetsu, I. Sakata, M. Terrones, M. Endo, M. Dresselhaus, Morphology-controlled fabrication of a three dimensional mesoporous poly(vinyl alcohol) monolith through the incorporation of graphene oxide, Carbon, 98 (2016)(IF=6.198),pp34-342..Vipin, A., Fugetsu, B., Sakata, I., Tanaka, T., Sun, L., Tanaka, S., Terrones, M., Endo, M., Dresselhaus, M., Three dimensional porous monoliths from multi-walled carbon nanotubes and polyacrylonitrile. Carbon 101 (IF=6.198) (2016), pp. 377-381.T.Visessonchok, M.Sugiyama, H.Sasaki and I.Sakata, “Detection and introduction of emerging technologies for green buildings in Thailand”, Int. J. of Energy Technology and Policy 12(1) (2016) pp.2-19. H.Sasaki, Z. Liu and I. Sakata, “Academic Landacape of Hydropower: Citation-analysis based method and its application”, Int. J. of Energy Technology and Policy  12(1)(2016)pp84-102.H.Nakamura, S.Suzuki, I.Sakata and Y.Kajikawa, "Knowledge combination modeling: The measurement of knowledge similarities between different technological domains", Technological Forecasting and Social Change 94 (2015) 187-201 (IF=2.058)H. Sasaki, I. Sakata, K. Yamaguchi, W. Wangjianiran and S. Phrakonkham, "Energy efficiency Standard and labeling forecasting model in the capital of Lao PDR", Journal of Sustainable Development of Energy, Water and Environment Systems　3(3)(2015),pp.269-281.M.Sugiyama, I.Sakata, H.Shiroyama, H.Yoshikawa and T.Taniguchi, “Five years on from Fukushima”, Nature 531(2016), pp. 29-31.I.Sakata, "Knowledge structuring tools for decision support service: an overview of citation-based approach", in chapter 17 of S.K.Kwan, Y.Sawatani, and J.C.Spohrer ed. Global Perspectives on Service Science: Japan (2016), pp.261-276. Springer坂田一郎、新時代のイノベーション政策を考える、學士會会報No.918(2016), pp2-6 .その他、研究業績詳細については* 東京大学イノベーション政策研究センター　メンバーページを参照。