（前排生病，測試咗唔係武肺。現在正常更番。)461Please respect copyright.ＰＥＮＡＮＡvTnSU7cjY7
461Please respect copyright.ＰＥＮＡＮＡQs7PKzJUZJ
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。
461Please respect copyright.ＰＥＮＡＮＡZ2FjTOUUrS
461Please respect copyright.ＰＥＮＡＮＡFaQa2YoG1F
461Please respect copyright.ＰＥＮＡＮＡnLbovngTnV
(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。461Please respect copyright.ＰＥＮＡＮＡO84FHqCHuO
461Please respect copyright.ＰＥＮＡＮＡXsPCD9B9rA
461Please respect copyright.ＰＥＮＡＮＡxsUd2A26Cv
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」。461Please respect copyright.ＰＥＮＡＮＡPkJqzWrOIQ
461Please respect copyright.ＰＥＮＡＮＡmhAosC68ZR
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。461Please respect copyright.ＰＥＮＡＮＡgyU0Re0DgS
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。461Please respect copyright.ＰＥＮＡＮＡvKxHtyOhdF
而當溫度達40度的時候，雀鳥們會開始熱叫。461Please respect copyright.ＰＥＮＡＮＡgC3Jb9o0Es
461Please respect copyright.ＰＥＮＡＮＡHAcFyXeGhs
461Please respect copyright.ＰＥＮＡＮＡXiboQyiKPO
(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。461Please respect copyright.ＰＥＮＡＮＡieESG6bKUp
461Please respect copyright.ＰＥＮＡＮＡYJ4GxDZJVC
461Please respect copyright.ＰＥＮＡＮＡm01FB7F6t3
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。461Please respect copyright.ＰＥＮＡＮＡ7059ZCF4XD
461Please respect copyright.ＰＥＮＡＮＡAAKfBzVsuZ
461Please respect copyright.ＰＥＮＡＮＡrxj6c7dInT
461Please respect copyright.ＰＥＮＡＮＡlzLsu0SrvJ
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。461Please respect copyright.ＰＥＮＡＮＡjZkuhyLnQp
461Please respect copyright.ＰＥＮＡＮＡ0UgVLmAHeX
https://www.youtube.com/watch?v=NggVoJ7mOos461Please respect copyright.ＰＥＮＡＮＡCQ54zCljFg
461Please respect copyright.ＰＥＮＡＮＡmDZEtzMcG4
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。461Please respect copyright.ＰＥＮＡＮＡx9cCDVR3vE
461Please respect copyright.ＰＥＮＡＮＡPg8beoQCnr
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。461Please respect copyright.ＰＥＮＡＮＡDv5UKqDrcO
461Please respect copyright.ＰＥＮＡＮＡI0nRHcLFVA
至少，懂得熱叫的雀鳥也較抵禦高溫。461Please respect copyright.ＰＥＮＡＮＡSmSvLq4rUa
461Please respect copyright.ＰＥＮＡＮＡ2JvAsBqyvw
461Please respect copyright.ＰＥＮＡＮＡVEAw8v56zX
461Please respect copyright.ＰＥＮＡＮＡA671RT3EHD
461Please respect copyright.ＰＥＮＡＮＡ6WkV5z1SHa
461Please respect copyright.ＰＥＮＡＮＡlIrzNVPuL2
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。461Please respect copyright.ＰＥＮＡＮＡxsR7mQiwJY
461Please respect copyright.ＰＥＮＡＮＡ36nye7DOf7
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/toc461Please respect copyright.ＰＥＮＡＮＡbIF30ZfVPc
461Please respect copyright.ＰＥＮＡＮＡNomZ46OwC9
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。461Please respect copyright.ＰＥＮＡＮＡpsexLDmnFm
461Please respect copyright.ＰＥＮＡＮＡ6EKFvC6JF2
Link:461Please respect copyright.ＰＥＮＡＮＡnNLhBJnAU4
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio461Please respect copyright.ＰＥＮＡＮＡ6N7nsbQx0I
461Please respect copyright.ＰＥＮＡＮＡI3588PLxW2
461Please respect copyright.ＰＥＮＡＮＡJJBhQBs7TM
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。461Please respect copyright.ＰＥＮＡＮＡWGjxg7A1w0
461Please respect copyright.ＰＥＮＡＮＡOE45e1V8ga
Ref1:https://www.nature.com/articles/s41598-020-75909-6461Please respect copyright.ＰＥＮＡＮＡgeYPg2Kxks
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