上野のパンダ、４年ぶり交尾　シャンシャン誕生以来

　上野動物園（東京都台東区）は６日、ジャイアントパンダのリーリー（雄）とシンシン（雌）の交尾行動を確認したと発表した。交尾が確認されたのは、シャンシャンの誕生につながった２０１７年２月以来、４年ぶり。
　同園によると、リーリーは昨年１１月から、シンシンは今年２月下旬から発情の兆候が表れていた。６日、２頭を柵越しにお見合いさせたところ、頻繁に鳴き交わすなど強い発情の兆候があり、同居させると、６５秒間の交尾行動が確認されたという。（2021/03/06-22:15）

Tokyo's Ueno Zoo on Saturday said it has confirmed that its male panda, Ri Ri, and his female partner, Shin Shin, mated for the first time since February 2017.
   Ri Ri began to show signs of being in heat in November last year, while similar signs were seen for Shin Shin from late last month.
   The pandas were put in the same enclosure Saturday after showing strong signs of being in heat, such as calling to each other many times, during their meeting over a fence. Their mating lasted 65 seconds, the zoo said.
   The zoo will monitor their behavior further to see the timing of a possible next occasion. After Shin Shin stops her estrus behavior, staff will check whether she is pregnant.
   Following the previous mating, Shin Shin gave birth to Xiang Xiang in June 2017.