@article{oai:ir.soken.ac.jp:00005226,
 author = {TAKEDA, Kohei F and HIRAIWA-HASEGAWA, Mariko and KUTSUKAKE , Nobuyuki},
 issue = {12-13},
 journal = {Behaviour, Behaviour},
 month = {},
 pages = {1779--1799},
 title = {Arch displays signal threat intentions in a fission-fusion flock of the red-crowned crane.},
 volume = {152},
 year = {2015}
}