（前排生病，測試咗唔係武肺。現在正常更番。)420Please respect copyright.ＰＥＮＡＮＡv86AfhAz3C
420Please respect copyright.ＰＥＮＡＮＡ2fw5cIlB25
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。
420Please respect copyright.ＰＥＮＡＮＡxDWgfuia4C
420Please respect copyright.ＰＥＮＡＮＡ00b51vupdr
420Please respect copyright.ＰＥＮＡＮＡYU7HcTqnbi
(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。420Please respect copyright.ＰＥＮＡＮＡ5ygybGT9K1
420Please respect copyright.ＰＥＮＡＮＡIi9kiIEIBB
420Please respect copyright.ＰＥＮＡＮＡQXLeNGDvHF
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」。420Please respect copyright.ＰＥＮＡＮＡ7CrspSe570
420Please respect copyright.ＰＥＮＡＮＡPcGA2y1zkg
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。420Please respect copyright.ＰＥＮＡＮＡE1AnaCZNIr
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。420Please respect copyright.ＰＥＮＡＮＡuUnulslB2S
而當溫度達40度的時候，雀鳥們會開始熱叫。420Please respect copyright.ＰＥＮＡＮＡpHGHmDAHep
420Please respect copyright.ＰＥＮＡＮＡZN6nQdd0cv
420Please respect copyright.ＰＥＮＡＮＡU75CS8BbX4
(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。420Please respect copyright.ＰＥＮＡＮＡMXrMHZSDEQ
420Please respect copyright.ＰＥＮＡＮＡ3UbhMJ7FDY
420Please respect copyright.ＰＥＮＡＮＡKeVmIgifW4
而會熱叫的雀仔，有部份能44度支撐20分鐘有多。420Please respect copyright.ＰＥＮＡＮＡwHbR1i6Thv
420Please respect copyright.ＰＥＮＡＮＡvLwvw5RcQm
420Please respect copyright.ＰＥＮＡＮＡIKhl5NOAo5
420Please respect copyright.ＰＥＮＡＮＡ1kjjvw04TC
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。420Please respect copyright.ＰＥＮＡＮＡY9B3xwGahd
420Please respect copyright.ＰＥＮＡＮＡ2hI9H53LNi
https://www.youtube.com/watch?v=NggVoJ7mOos420Please respect copyright.ＰＥＮＡＮＡX6E1fOTeKq
420Please respect copyright.ＰＥＮＡＮＡHJKHjkbzlP
但並不是所有雀鳥也能這樣做，至少班胸雀鳥沒有這功能。420Please respect copyright.ＰＥＮＡＮＡzyQATfJeQU
420Please respect copyright.ＰＥＮＡＮＡyKDNjEgOIN
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。420Please respect copyright.ＰＥＮＡＮＡvN1SJaU72i
420Please respect copyright.ＰＥＮＡＮＡd85VxiWLVq
至少，懂得熱叫的雀鳥也較抵禦高溫。420Please respect copyright.ＰＥＮＡＮＡZEcYbyL9El
420Please respect copyright.ＰＥＮＡＮＡqdkZvbAL9C
420Please respect copyright.ＰＥＮＡＮＡZ9UYI1Ochc
420Please respect copyright.ＰＥＮＡＮＡ0XOreBZymB
420Please respect copyright.ＰＥＮＡＮＡRWSAMXfqi2
420Please respect copyright.ＰＥＮＡＮＡ3TqWa5vK8R
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。420Please respect copyright.ＰＥＮＡＮＡM6Zu4swAs3
420Please respect copyright.ＰＥＮＡＮＡ2MUIfsOTpy
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/toc420Please respect copyright.ＰＥＮＡＮＡ8wMYaeP96Y
420Please respect copyright.ＰＥＮＡＮＡkKt058FZsq
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。420Please respect copyright.ＰＥＮＡＮＡx8O5LBPXG6
420Please respect copyright.ＰＥＮＡＮＡdx0hbmdieW
Link:420Please respect copyright.ＰＥＮＡＮＡ0QFWSf91Wa
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio420Please respect copyright.ＰＥＮＡＮＡP3hfTZk6S1
420Please respect copyright.ＰＥＮＡＮＡSMgR1Pj853
420Please respect copyright.ＰＥＮＡＮＡMn7gfJX8WP
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。420Please respect copyright.ＰＥＮＡＮＡjiweBDUFDb
420Please respect copyright.ＰＥＮＡＮＡzHMGnNgWMI
Ref1:https://www.nature.com/articles/s41598-020-75909-6420Please respect copyright.ＰＥＮＡＮＡGMWspfmoqy
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