Afterwards, the association's local conservation group estimated that there were at least 30,000 empty chrysalises whose butterfly occupants had already left.
隨後他們和當地保育團體共動員 40 名會員，分組在 20 個 100 平方公尺的範圍內採集統計，估算出每一個網格約有 140 隻蝶蛹，保守估計至少有 3 萬個蛹在那裡羽化並已遷離。