（前排生病，測試咗唔係武肺。現在正常更番。)446Please respect copyright.ＰＥＮＡＮＡsEyIepYNyB
446Please respect copyright.ＰＥＮＡＮＡ1NuDvvBuyM
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。
446Please respect copyright.ＰＥＮＡＮＡXWmlIUqXEC
446Please respect copyright.ＰＥＮＡＮＡK9NKAQC5sY
446Please respect copyright.ＰＥＮＡＮＡvRxuXR3imi
(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。446Please respect copyright.ＰＥＮＡＮＡ0Q3lr1vI9G
446Please respect copyright.ＰＥＮＡＮＡHIDQGCkouh
446Please respect copyright.ＰＥＮＡＮＡzjd8bUcCZ1
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」。446Please respect copyright.ＰＥＮＡＮＡCubNjSpoVO
446Please respect copyright.ＰＥＮＡＮＡmMrND2PHcg
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。446Please respect copyright.ＰＥＮＡＮＡ4I8ZWJvEin
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。446Please respect copyright.ＰＥＮＡＮＡWyQM3ucDZq
而當溫度達40度的時候，雀鳥們會開始熱叫。446Please respect copyright.ＰＥＮＡＮＡS3VQP4LTb9
446Please respect copyright.ＰＥＮＡＮＡOFIvRqpZvQ
446Please respect copyright.ＰＥＮＡＮＡAmkRF9QnQs
(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。446Please respect copyright.ＰＥＮＡＮＡjS6qpw9b3F
446Please respect copyright.ＰＥＮＡＮＡxTtb6S479i
446Please respect copyright.ＰＥＮＡＮＡ986n2j8tzU
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。446Please respect copyright.ＰＥＮＡＮＡKqj1RTKfBi
446Please respect copyright.ＰＥＮＡＮＡia6kx4C14I
446Please respect copyright.ＰＥＮＡＮＡVXSilQMbRC
446Please respect copyright.ＰＥＮＡＮＡCj5oezVIP5
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。446Please respect copyright.ＰＥＮＡＮＡgkSZ8TEg7E
446Please respect copyright.ＰＥＮＡＮＡx2qbIEVMOu
https://www.youtube.com/watch?v=NggVoJ7mOos446Please respect copyright.ＰＥＮＡＮＡa1e54NTerV
446Please respect copyright.ＰＥＮＡＮＡnQ7BZOkDUz
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。446Please respect copyright.ＰＥＮＡＮＡ5trTjpgPhk
446Please respect copyright.ＰＥＮＡＮＡR2smlOiTGA
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。446Please respect copyright.ＰＥＮＡＮＡpQXFoZmuZt
446Please respect copyright.ＰＥＮＡＮＡYnAbDotaHk
至少，懂得熱叫的雀鳥也較抵禦高溫。446Please respect copyright.ＰＥＮＡＮＡ7VA3OaZNlt
446Please respect copyright.ＰＥＮＡＮＡYuMJ6rSEXX
446Please respect copyright.ＰＥＮＡＮＡLScDDSxPY4
446Please respect copyright.ＰＥＮＡＮＡAOc5vLPuLG
446Please respect copyright.ＰＥＮＡＮＡExcMIExp4s
446Please respect copyright.ＰＥＮＡＮＡixWTss6s7U
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。446Please respect copyright.ＰＥＮＡＮＡaiFmgUMOHt
446Please respect copyright.ＰＥＮＡＮＡNuwgY88wk2
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/toc446Please respect copyright.ＰＥＮＡＮＡolymRWFK7C
446Please respect copyright.ＰＥＮＡＮＡHHBAxYkykX
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。446Please respect copyright.ＰＥＮＡＮＡLSK3XNuKCf
446Please respect copyright.ＰＥＮＡＮＡf8FJSpe71h
Link:446Please respect copyright.ＰＥＮＡＮＡ5gY0s5pvFp
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio446Please respect copyright.ＰＥＮＡＮＡNnWWt6gZgX
446Please respect copyright.ＰＥＮＡＮＡbp55lJ0K2e
446Please respect copyright.ＰＥＮＡＮＡjxacVLOkLW
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。446Please respect copyright.ＰＥＮＡＮＡzYozpjS3bY
446Please respect copyright.ＰＥＮＡＮＡ97MaUYzarx
Ref1:https://www.nature.com/articles/s41598-020-75909-6446Please respect copyright.ＰＥＮＡＮＡRHlvaSe3A4
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