（前排生病，測試咗唔係武肺。現在正常更番。)516Please respect copyright.ＰＥＮＡＮＡHzINqoaMf1
516Please respect copyright.ＰＥＮＡＮＡb0CRe2xR8T
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。
516Please respect copyright.ＰＥＮＡＮＡIMo4VGVQTM
516Please respect copyright.ＰＥＮＡＮＡI2Q67JU8y5
516Please respect copyright.ＰＥＮＡＮＡ9eczHqDDCt
(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。516Please respect copyright.ＰＥＮＡＮＡvce52Pslkt
516Please respect copyright.ＰＥＮＡＮＡwo7WXTrIEa
516Please respect copyright.ＰＥＮＡＮＡ0FskAC8s4j
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」。516Please respect copyright.ＰＥＮＡＮＡ9Q6hXemV8s
516Please respect copyright.ＰＥＮＡＮＡrHs98YkYIP
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。516Please respect copyright.ＰＥＮＡＮＡggLwqJ8rht
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。516Please respect copyright.ＰＥＮＡＮＡisw8ndlOQb
而當溫度達40度的時候，雀鳥們會開始熱叫。516Please respect copyright.ＰＥＮＡＮＡDeatJCG5z2
516Please respect copyright.ＰＥＮＡＮＡEqtcym8wBM
516Please respect copyright.ＰＥＮＡＮＡCe1BFmGWoW
(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。516Please respect copyright.ＰＥＮＡＮＡUBaurL4137
516Please respect copyright.ＰＥＮＡＮＡwGmmCthj6M
516Please respect copyright.ＰＥＮＡＮＡjyJkncxfyE
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。516Please respect copyright.ＰＥＮＡＮＡu6Ih30zYUA
516Please respect copyright.ＰＥＮＡＮＡUMvzBkNNwW
516Please respect copyright.ＰＥＮＡＮＡyaNXpHNnvu
516Please respect copyright.ＰＥＮＡＮＡgdi7dFomRR
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。516Please respect copyright.ＰＥＮＡＮＡnybEUzRyyx
516Please respect copyright.ＰＥＮＡＮＡJ09obF9F9x
https://www.youtube.com/watch?v=NggVoJ7mOos516Please respect copyright.ＰＥＮＡＮＡFmPK1kazST
516Please respect copyright.ＰＥＮＡＮＡocVYlCKu0m
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。516Please respect copyright.ＰＥＮＡＮＡKXnot8LYSA
516Please respect copyright.ＰＥＮＡＮＡ7NvGyMxDQ3
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。516Please respect copyright.ＰＥＮＡＮＡYs90jRpUu3
516Please respect copyright.ＰＥＮＡＮＡwr9kYkQ5Up
至少，懂得熱叫的雀鳥也較抵禦高溫。516Please respect copyright.ＰＥＮＡＮＡBqmqOCV7su
516Please respect copyright.ＰＥＮＡＮＡwXkJNMBBjN
516Please respect copyright.ＰＥＮＡＮＡIeWxd5zyXt
516Please respect copyright.ＰＥＮＡＮＡmD7FcQlcae
516Please respect copyright.ＰＥＮＡＮＡzcQozqrUSP
516Please respect copyright.ＰＥＮＡＮＡZp2auOF9uX
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。516Please respect copyright.ＰＥＮＡＮＡhVehm5Ph7E
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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/toc516Please respect copyright.ＰＥＮＡＮＡbqFlpEH9OX
516Please respect copyright.ＰＥＮＡＮＡkDAyfEGXJW
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。516Please respect copyright.ＰＥＮＡＮＡVugxcoSB2M
516Please respect copyright.ＰＥＮＡＮＡ1jX5HzidmV
Link:516Please respect copyright.ＰＥＮＡＮＡb4MWe802uF
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio516Please respect copyright.ＰＥＮＡＮＡmcwpNtRh4n
516Please respect copyright.ＰＥＮＡＮＡdtYGs7GTQ4
516Please respect copyright.ＰＥＮＡＮＡrnTV6H4qnt
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。516Please respect copyright.ＰＥＮＡＮＡPhfa07YVIp
516Please respect copyright.ＰＥＮＡＮＡvOhuvFjPlU
Ref1:https://www.nature.com/articles/s41598-020-75909-6516Please respect copyright.ＰＥＮＡＮＡXwlLDmAWG7
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