https://gigazine.net/news/20180620-bees-stressed-work/

http://www.chunichi.co.jp/s/article/2018062301001211.html

https://sirabee.com/2018/06/23/20161681403/

http://chuplus.jp/paper/article/detail.php?comment_id=560590&comment_sub_id=0&category_id=113

https://headlines.yahoo.co.jp/hl?a=20180623-00050037-yom-soci ＊参考 https://twitter.com/okaguchik/status/965888191122165760