2019年４月５日。
不忍池*1。
不忍池。上野動物園*2。ユリカモメ。
*1:See also https://sumita-m.hatenadiary.com/entry/20151214/1450066899 https://sumita-m.hatenadiary.com/entry/20160820/1471623058 https://sumita-m.hatenadiary.com/entry/20160913/1473739802 https://sumita-m.hatenadiary.com/entry/20160916/1474036064 https://sumita-m.hatenadiary.com/entry/2019/04/06/102306
*2:See also https://sumita-m.hatenadiary.com/entry/20070104/1167936566 https://sumita-m.hatenadiary.com/entry/20070119/1169238285 https://sumita-m.hatenadiary.com/entry/20070815/1187151753 https://sumita-m.hatenadiary.com/entry/20100628/1277750059 https://sumita-m.hatenadiary.com/entry/20160526/1464275325 https://sumita-m.hatenadiary.com/entry/20170831/1504142599 https://sumita-m.hatenadiary.com/entry/2019/04/06/102306
