（前排生病，測試咗唔係武肺。現在正常更番。)522Please respect copyright.ＰＥＮＡＮＡAIIvDQINJl
522Please respect copyright.ＰＥＮＡＮＡVNzEsVyTWN
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。
522Please respect copyright.ＰＥＮＡＮＡ1v7f558xiF
522Please respect copyright.ＰＥＮＡＮＡnjBwzBk5GC
522Please respect copyright.ＰＥＮＡＮＡHqUQprJXR3
(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。522Please respect copyright.ＰＥＮＡＮＡfzPOwHmoe0
522Please respect copyright.ＰＥＮＡＮＡmnAdroX7TY
522Please respect copyright.ＰＥＮＡＮＡSXHyRT4FBD
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」。522Please respect copyright.ＰＥＮＡＮＡldw0AYjmFr
522Please respect copyright.ＰＥＮＡＮＡI6I5KaJ1D2
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。522Please respect copyright.ＰＥＮＡＮＡLJiegjxRCY
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。522Please respect copyright.ＰＥＮＡＮＡ5ur7gJ7cf7
而當溫度達40度的時候，雀鳥們會開始熱叫。522Please respect copyright.ＰＥＮＡＮＡkWhjbjYlCu
522Please respect copyright.ＰＥＮＡＮＡxV7iZ2nv6q
522Please respect copyright.ＰＥＮＡＮＡxxES8IA15d
(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。522Please respect copyright.ＰＥＮＡＮＡLydd2BFORW
522Please respect copyright.ＰＥＮＡＮＡf68mTexqqG
522Please respect copyright.ＰＥＮＡＮＡEu8VHX9bid
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。522Please respect copyright.ＰＥＮＡＮＡHIfW10In5k
522Please respect copyright.ＰＥＮＡＮＡbwT984pBqo
522Please respect copyright.ＰＥＮＡＮＡQ3CWWTpyFq
522Please respect copyright.ＰＥＮＡＮＡY4p6cQwwu8
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。522Please respect copyright.ＰＥＮＡＮＡUclePV7wd4
522Please respect copyright.ＰＥＮＡＮＡdCP1FtxR2x
https://www.youtube.com/watch?v=NggVoJ7mOos522Please respect copyright.ＰＥＮＡＮＡsNux9oveT6
522Please respect copyright.ＰＥＮＡＮＡ28EyhVPeWk
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。522Please respect copyright.ＰＥＮＡＮＡPzs4JVWAqS
522Please respect copyright.ＰＥＮＡＮＡ7RMKXEdRNE
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。522Please respect copyright.ＰＥＮＡＮＡycPY5VC7Wm
522Please respect copyright.ＰＥＮＡＮＡQ6YzxwSzbj
至少，懂得熱叫的雀鳥也較抵禦高溫。522Please respect copyright.ＰＥＮＡＮＡMTkdLBnDSz
522Please respect copyright.ＰＥＮＡＮＡ25NZmuhA4C
522Please respect copyright.ＰＥＮＡＮＡlAfEAfMBDN
522Please respect copyright.ＰＥＮＡＮＡpUbcqCPiwj
522Please respect copyright.ＰＥＮＡＮＡiSIexKI6lL
522Please respect copyright.ＰＥＮＡＮＡwNOsVwgrv4
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。522Please respect copyright.ＰＥＮＡＮＡukVQsK128y
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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/toc522Please respect copyright.ＰＥＮＡＮＡIUehTQ5yiA
522Please respect copyright.ＰＥＮＡＮＡ3zqhJMOv8b
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。522Please respect copyright.ＰＥＮＡＮＡa43xXXsLSv
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Link:522Please respect copyright.ＰＥＮＡＮＡPEa5rco9h6
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio522Please respect copyright.ＰＥＮＡＮＡ0wIi5lsgYx
522Please respect copyright.ＰＥＮＡＮＡzaZASlZiL9
522Please respect copyright.ＰＥＮＡＮＡCpC6jNmCgy
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。522Please respect copyright.ＰＥＮＡＮＡ9IXpAF819B
522Please respect copyright.ＰＥＮＡＮＡUOpHdcu7h1
Ref1:https://www.nature.com/articles/s41598-020-75909-6522Please respect copyright.ＰＥＮＡＮＡ9lfm1NogRr
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