（前排生病，測試咗唔係武肺。現在正常更番。)485Please respect copyright.ＰＥＮＡＮＡNGuDojunJt
485Please respect copyright.ＰＥＮＡＮＡkOfDwu3Tfd
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。
485Please respect copyright.ＰＥＮＡＮＡVKhx1eP22T
485Please respect copyright.ＰＥＮＡＮＡQgQXuwSi9z
485Please respect copyright.ＰＥＮＡＮＡbJ0CCwg15d
(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。485Please respect copyright.ＰＥＮＡＮＡYJF1v4fvLm
485Please respect copyright.ＰＥＮＡＮＡJoiZOG3xfH
485Please respect copyright.ＰＥＮＡＮＡVdwg8EW16m
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」。485Please respect copyright.ＰＥＮＡＮＡchFr6V5fLh
485Please respect copyright.ＰＥＮＡＮＡfirVf82sfL
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。485Please respect copyright.ＰＥＮＡＮＡ0CRU3XgKqH
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。485Please respect copyright.ＰＥＮＡＮＡFsrpL8g9MA
而當溫度達40度的時候，雀鳥們會開始熱叫。485Please respect copyright.ＰＥＮＡＮＡTNGQFVSdPO
485Please respect copyright.ＰＥＮＡＮＡyx0ch5E84g
485Please respect copyright.ＰＥＮＡＮＡPPMAZL8jFe
(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。485Please respect copyright.ＰＥＮＡＮＡDtZsfY9p0y
485Please respect copyright.ＰＥＮＡＮＡ1xt42zLFQz
485Please respect copyright.ＰＥＮＡＮＡ1M04MTcND7
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。485Please respect copyright.ＰＥＮＡＮＡBMv4JIpQKN
485Please respect copyright.ＰＥＮＡＮＡqNdFDB8jtP
485Please respect copyright.ＰＥＮＡＮＡFkTdj8oHwm
485Please respect copyright.ＰＥＮＡＮＡjjTYS8N89W
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。485Please respect copyright.ＰＥＮＡＮＡtW1nZVy0Hg
485Please respect copyright.ＰＥＮＡＮＡ4mqtPZyZfZ
https://www.youtube.com/watch?v=NggVoJ7mOos485Please respect copyright.ＰＥＮＡＮＡRiYGQ97MwD
485Please respect copyright.ＰＥＮＡＮＡUBQ3DTmHQz
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。485Please respect copyright.ＰＥＮＡＮＡvfOUZUVBA5
485Please respect copyright.ＰＥＮＡＮＡW6QXab6x2Y
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。485Please respect copyright.ＰＥＮＡＮＡtFOQCZxN0D
485Please respect copyright.ＰＥＮＡＮＡRtiDiL5pXm
至少，懂得熱叫的雀鳥也較抵禦高溫。485Please respect copyright.ＰＥＮＡＮＡjt0cBpDtQb
485Please respect copyright.ＰＥＮＡＮＡinla4vwRZS
485Please respect copyright.ＰＥＮＡＮＡCMmhbo5BTR
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485Please respect copyright.ＰＥＮＡＮＡbuSPpf8hJ2
485Please respect copyright.ＰＥＮＡＮＡRapRK253cT
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。485Please respect copyright.ＰＥＮＡＮＡRBqFv6QxHj
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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/toc485Please respect copyright.ＰＥＮＡＮＡqIyCU49LI9
485Please respect copyright.ＰＥＮＡＮＡyqqxq2iWrq
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。485Please respect copyright.ＰＥＮＡＮＡwukYMwMxo0
485Please respect copyright.ＰＥＮＡＮＡlJ71Y5JOwQ
Link:485Please respect copyright.ＰＥＮＡＮＡWbIZPHkO6F
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio485Please respect copyright.ＰＥＮＡＮＡDY9TlOwcWS
485Please respect copyright.ＰＥＮＡＮＡIQloxH9Ed2
485Please respect copyright.ＰＥＮＡＮＡUfyN7pAnbw
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。485Please respect copyright.ＰＥＮＡＮＡNgPqsqFLxA
485Please respect copyright.ＰＥＮＡＮＡWCVL8I1j4y
Ref1:https://www.nature.com/articles/s41598-020-75909-6485Please respect copyright.ＰＥＮＡＮＡlI2PJV6AAL
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