（前排生病，測試咗唔係武肺。現在正常更番。)467Please respect copyright.ＰＥＮＡＮＡC5RDHwcpkQ
467Please respect copyright.ＰＥＮＡＮＡhcrZXEdEdT
沙漠經常被描繪成為鳥不生蛋的地方。雖有不少動物均會採取夜行性方針躲避有機會超過50度高溫的日間環境。但現實上仍有選擇在日間行動的沙漠雀鳥。
467Please respect copyright.ＰＥＮＡＮＡrmq9ac3nuF
467Please respect copyright.ＰＥＮＡＮＡwSManFMof3
467Please respect copyright.ＰＥＮＡＮＡVQfbYjN6By
(圖2)有資料顯示，居住在沙漠的雀鳥，每天有數小時可以維持自己體溫低於外間溫度10-20度左右。467Please respect copyright.ＰＥＮＡＮＡiGUHk57V1S
467Please respect copyright.ＰＥＮＡＮＡ6FEnxt3nTY
467Please respect copyright.ＰＥＮＡＮＡ994r5mZZDo
而斑胸草雀是其中一種能適應沙漠氣溫的雀鳥，有研究發現，牠們在高溫下會發出獨特快速節奏的高音叫聲，下稱「熱叫」。467Please respect copyright.ＰＥＮＡＮＡla6qQeeV0z
467Please respect copyright.ＰＥＮＡＮＡ25funUkhJB
研究人員找來44隻斑胸草雀，其中有32隻(73%)會遇熱時會發出熱叫。467Please respect copyright.ＰＥＮＡＮＡStXwoeZFS4
如圖中所示，隨著溫度逐漸提升，喘氣所佔用的時間開始增加。467Please respect copyright.ＰＥＮＡＮＡ5X14lzxj9Z
而當溫度達40度的時候，雀鳥們會開始熱叫。467Please respect copyright.ＰＥＮＡＮＡlIL5GMFfN3
467Please respect copyright.ＰＥＮＡＮＡztjTKdIjbk
467Please respect copyright.ＰＥＮＡＮＡ39DwStKnru
(圖3)不懂熱叫的雀仔，在42度的時候開始出現失去平衝等不適狀態，實驗立即停止。467Please respect copyright.ＰＥＮＡＮＡ2jGGQZOIug
467Please respect copyright.ＰＥＮＡＮＡwKkEQYR8xc
467Please respect copyright.ＰＥＮＡＮＡJ3Uf7HrH4D
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。467Please respect copyright.ＰＥＮＡＮＡdoSNv8Pe39
467Please respect copyright.ＰＥＮＡＮＡipzgOmgLdz
467Please respect copyright.ＰＥＮＡＮＡWAqAC0QFn3
467Please respect copyright.ＰＥＮＡＮＡ9PfK3c8eWN
有部分雀鳥會透過gular flutter來抵禦高溫，如下面影片一樣，雀鳥會透過振盪來讓熱空氣與內裡濕潤的內壁環境接觸，熱空氣會蒸發內壁環境的水滴（水滴的能量會轉移到空氣中，因此水滴的溫度會降低），因而盡量減低身體溫度。467Please respect copyright.ＰＥＮＡＮＡYBBBGlW7fL
467Please respect copyright.ＰＥＮＡＮＡgj0sWrjTBe
https://www.youtube.com/watch?v=NggVoJ7mOos467Please respect copyright.ＰＥＮＡＮＡqvjjKGGKpV
467Please respect copyright.ＰＥＮＡＮＡANbFuH9G7K
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。467Please respect copyright.ＰＥＮＡＮＡeSCXuu0MV0
467Please respect copyright.ＰＥＮＡＮＡpbvyX8BIgE
或計熱叫就是牠們發展出的一種散熱方式，可能原理非常接近，但還需進一步的確認。467Please respect copyright.ＰＥＮＡＮＡMT5DFzHXzZ
467Please respect copyright.ＰＥＮＡＮＡ2cnFpOCqSd
至少，懂得熱叫的雀鳥也較抵禦高溫。467Please respect copyright.ＰＥＮＡＮＡ48Fk4cEcTX
467Please respect copyright.ＰＥＮＡＮＡKoSInUkW2f
467Please respect copyright.ＰＥＮＡＮＡZtVnchyCLS
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467Please respect copyright.ＰＥＮＡＮＡm09cr79Tvt
467Please respect copyright.ＰＥＮＡＮＡ2dPUMWGfz3
如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。467Please respect copyright.ＰＥＮＡＮＡdlgrIw9q0H
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc467Please respect copyright.ＰＥＮＡＮＡZ3abWOxRiL
467Please respect copyright.ＰＥＮＡＮＡYUsdQ07PL3
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。467Please respect copyright.ＰＥＮＡＮＡQ7T9SyFS0j
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Link:467Please respect copyright.ＰＥＮＡＮＡ3hczHjHhN4
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio467Please respect copyright.ＰＥＮＡＮＡ4tK4caZwS2
467Please respect copyright.ＰＥＮＡＮＡatP0afUz9Q
467Please respect copyright.ＰＥＮＡＮＡlPsQLE6Ylz
除非Facebook及IG重開侵侵的account，否則我的IG將不會再作更新，只會寄居本土LIHKG及Penana。467Please respect copyright.ＰＥＮＡＮＡoHlMyxSqnp
467Please respect copyright.ＰＥＮＡＮＡJiOhqRxpfr
Ref1:https://www.nature.com/articles/s41598-020-75909-6467Please respect copyright.ＰＥＮＡＮＡgWSg9D2YTX
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