（前排生病，測試咗唔係武肺。現在正常更番。)424Please respect copyright.ＰＥＮＡＮＡHwSn7n01b6
424Please respect copyright.ＰＥＮＡＮＡ73h74ia5hB
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。
424Please respect copyright.ＰＥＮＡＮＡjxWOSftAUM
424Please respect copyright.ＰＥＮＡＮＡLfPpmzVXXz
424Please respect copyright.ＰＥＮＡＮＡP24gFSUpTG
(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。424Please respect copyright.ＰＥＮＡＮＡt46JsmhL8A
424Please respect copyright.ＰＥＮＡＮＡ0t1JCLfQlU
424Please respect copyright.ＰＥＮＡＮＡ7lLd8Cfvag
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」。424Please respect copyright.ＰＥＮＡＮＡJED4exm9Pg
424Please respect copyright.ＰＥＮＡＮＡyS410JLtGj
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。424Please respect copyright.ＰＥＮＡＮＡ73sXHy41Ep
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。424Please respect copyright.ＰＥＮＡＮＡoEfWs4r62F
而當溫度達40度的時候，雀鳥們會開始熱叫。424Please respect copyright.ＰＥＮＡＮＡNjIJdgWIGN
424Please respect copyright.ＰＥＮＡＮＡUWmfZecNBb
424Please respect copyright.ＰＥＮＡＮＡvWwjKJAmte
(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。424Please respect copyright.ＰＥＮＡＮＡ6b7C0y1xlA
424Please respect copyright.ＰＥＮＡＮＡgkSmPVNeUK
424Please respect copyright.ＰＥＮＡＮＡOHQoWRezeD
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。424Please respect copyright.ＰＥＮＡＮＡ2nI54jo2vO
424Please respect copyright.ＰＥＮＡＮＡToPA50XkMX
424Please respect copyright.ＰＥＮＡＮＡw8sPHeWWZU
424Please respect copyright.ＰＥＮＡＮＡ3JUARr9XvB
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。424Please respect copyright.ＰＥＮＡＮＡCZ3kSNZtre
424Please respect copyright.ＰＥＮＡＮＡ1E5ZW0Y2BH
https://www.youtube.com/watch?v=NggVoJ7mOos424Please respect copyright.ＰＥＮＡＮＡfUirMa8TQw
424Please respect copyright.ＰＥＮＡＮＡ44RnxRwrvR
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。424Please respect copyright.ＰＥＮＡＮＡZ28dLfWExx
424Please respect copyright.ＰＥＮＡＮＡl08rjnOCM5
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。424Please respect copyright.ＰＥＮＡＮＡl2YjQ9R6U3
424Please respect copyright.ＰＥＮＡＮＡlqDfVgM6Xy
至少，懂得熱叫的雀鳥也較抵禦高溫。424Please respect copyright.ＰＥＮＡＮＡfvwlnKkVKJ
424Please respect copyright.ＰＥＮＡＮＡ5EsUIMs8Mu
424Please respect copyright.ＰＥＮＡＮＡD6H9Bj40dV
424Please respect copyright.ＰＥＮＡＮＡg4KnF5pEsd
424Please respect copyright.ＰＥＮＡＮＡMBf2ddZB6p
424Please respect copyright.ＰＥＮＡＮＡdxE2UPOI6R
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。424Please respect copyright.ＰＥＮＡＮＡ3UJyXKNS05
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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/toc424Please respect copyright.ＰＥＮＡＮＡDmri45AyOo
424Please respect copyright.ＰＥＮＡＮＡG1m4uwkjgP
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。424Please respect copyright.ＰＥＮＡＮＡnJfJypw0Gc
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Link:424Please respect copyright.ＰＥＮＡＮＡxqkaSm1sB2
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio424Please respect copyright.ＰＥＮＡＮＡcUevf0Wdmo
424Please respect copyright.ＰＥＮＡＮＡaRxCzV0YHT
424Please respect copyright.ＰＥＮＡＮＡQc8qV4nOlw
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。424Please respect copyright.ＰＥＮＡＮＡMDgI8KCjKt
424Please respect copyright.ＰＥＮＡＮＡegSiEWUBBo
Ref1:https://www.nature.com/articles/s41598-020-75909-6424Please respect copyright.ＰＥＮＡＮＡY8Y96KfhsI
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