הצטרף ל-Nostr
2026-05-10 20:05:55 CEST

Mark McCaughrean on Nostr: How do flies stay cool on hot days if they can't sweat? 🤨 They blow bubbles of ...

How do flies stay cool on hot days if they can't sweat? 🤨

They blow bubbles of watery saliva; some of it evaporates, removing heat; they then re-ingest the cooler liquid.

Simple 🤷‍♂️

Two flies seen at it this evening: a lesser dung fly (Sepsis fulgens; 🇩🇪 Glänzende Schwingfliege) & a fruit fly (Scaptomyza pallida; 🇩🇪 Taufliege).

#Heidelberg 🏰
#Photography 📷️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️
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