科普專欄–薯不揀單 - 三十秒科學–世界上究竟是人多還是雀鳥多？

在整個世界上，究竟人類的總數目較多，還是雀鳥的總數目比較多呢?593Please respect copyright.ＰＥＮＡＮＡuF7gvGOb2Q
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(圖2)有科學家綜合現有的資料，根據已知9700種雀鳥的地域分佈、習性及互相的關係，利用電腦程式推斷出世界的總雀鳥數目。593Please respect copyright.ＰＥＮＡＮＡ42gK1zILZt
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(圖3)根據數學模型統計，雀鳥在地球總數量的中位數為500億，亦即是說平均每一個人口就有六隻雀仔，所以蔡SIR參與雀仔按摩亦只是環境所迫所致，在數學統計上實屬無可奈何，並非存心破壞香港警隊的名聲。593Please respect copyright.ＰＥＮＡＮＡHn5dJU2q8D
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至於數量排名第一的雀鳥，則為16億的家麻雀，跟隨其後的為13億的歐洲椋鳥及12億的環嘴鷗，可見蔡SIR遇上麻雀尤其是從越南來的機率可謂甚高。593Please respect copyright.ＰＥＮＡＮＡmKDUd5T1FE
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雀鳥數目排名excel:https://www.pnas.org/highwire/filestream/984963/field_highwire_adjunct_files/1/pnas.2023170118.sd01.xlsx593Please respect copyright.ＰＥＮＡＮＡZ35bGDTJze
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Ref1:https://www.pnas.org/content/118/21/e2023170118

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