（前排生病，測試咗唔係武肺。現在正常更番。)456Please respect copyright.ＰＥＮＡＮＡwfP3thYbjS
456Please respect copyright.ＰＥＮＡＮＡ2JjkzTCTRT
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。
456Please respect copyright.ＰＥＮＡＮＡVKYx44c3qB
456Please respect copyright.ＰＥＮＡＮＡTyG0d5SmCG
456Please respect copyright.ＰＥＮＡＮＡ9MRCkzDzTQ
(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。456Please respect copyright.ＰＥＮＡＮＡCvBKU3R4Cx
456Please respect copyright.ＰＥＮＡＮＡkWY2ECdrPx
456Please respect copyright.ＰＥＮＡＮＡtvFbTNkrWD
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」。456Please respect copyright.ＰＥＮＡＮＡggPlZMQPad
456Please respect copyright.ＰＥＮＡＮＡ8JUOIDkO2c
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。456Please respect copyright.ＰＥＮＡＮＡZJaIrKc8Su
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。456Please respect copyright.ＰＥＮＡＮＡ2HzOEnBpF8
而當溫度達40度的時候，雀鳥們會開始熱叫。456Please respect copyright.ＰＥＮＡＮＡiLvIlyxzJU
456Please respect copyright.ＰＥＮＡＮＡUFJC0v8R3F
456Please respect copyright.ＰＥＮＡＮＡhwmVJxaDZW
(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。456Please respect copyright.ＰＥＮＡＮＡfJLTd5RtzS
456Please respect copyright.ＰＥＮＡＮＡ2jMxjolkPQ
456Please respect copyright.ＰＥＮＡＮＡAnaNdmEwtY
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。456Please respect copyright.ＰＥＮＡＮＡBTGLWIiFUI
456Please respect copyright.ＰＥＮＡＮＡUf0naTgumb
456Please respect copyright.ＰＥＮＡＮＡS7eV5CKTbK
456Please respect copyright.ＰＥＮＡＮＡ4fgYxJ2BAE
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。456Please respect copyright.ＰＥＮＡＮＡsNpsaFAhSw
456Please respect copyright.ＰＥＮＡＮＡhQl2aUMt47
https://www.youtube.com/watch?v=NggVoJ7mOos456Please respect copyright.ＰＥＮＡＮＡ7JLt8khAiU
456Please respect copyright.ＰＥＮＡＮＡ8mBuWQwKw8
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。456Please respect copyright.ＰＥＮＡＮＡSnYbunmmoV
456Please respect copyright.ＰＥＮＡＮＡ9FgBMNo4qP
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。456Please respect copyright.ＰＥＮＡＮＡjrZZw91HQV
456Please respect copyright.ＰＥＮＡＮＡNxV9RPE0pY
至少，懂得熱叫的雀鳥也較抵禦高溫。456Please respect copyright.ＰＥＮＡＮＡlMq0JiU96F
456Please respect copyright.ＰＥＮＡＮＡLxKiGcbabJ
456Please respect copyright.ＰＥＮＡＮＡh9CHPEFxKM
456Please respect copyright.ＰＥＮＡＮＡjysJJ8KBja
456Please respect copyright.ＰＥＮＡＮＡyj7DlXIQui
456Please respect copyright.ＰＥＮＡＮＡ7xphhBd3bL
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。456Please respect copyright.ＰＥＮＡＮＡVxMO6xEJMU
456Please respect copyright.ＰＥＮＡＮＡTetTFY1qcA
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/toc456Please respect copyright.ＰＥＮＡＮＡJsKClcw6hL
456Please respect copyright.ＰＥＮＡＮＡzy2xpQZ75Y
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。456Please respect copyright.ＰＥＮＡＮＡ5bDwpHl3lM
456Please respect copyright.ＰＥＮＡＮＡLH8bQpGf23
Link:456Please respect copyright.ＰＥＮＡＮＡA7uYnXGt7i
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio456Please respect copyright.ＰＥＮＡＮＡeW94aoeJmn
456Please respect copyright.ＰＥＮＡＮＡ6GDVUURExi
456Please respect copyright.ＰＥＮＡＮＡD8LoHT5Vqm
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。456Please respect copyright.ＰＥＮＡＮＡ8a0RYfXUOF
456Please respect copyright.ＰＥＮＡＮＡuUD3bZyJ5N
Ref1:https://www.nature.com/articles/s41598-020-75909-6456Please respect copyright.ＰＥＮＡＮＡx16X0RYymo
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