Wind, Migrating Birds and Ultralights (Wonderful 5min YT Vid)

Today I came across this magical video on YT which is from seven years ago. It is *not* AI.

For some reason this immediately reminded me of the (unrelated to the video) studies I read in the past of the Bar-Headed Geese who migrate over the Himalaya mountains. Apparently the mountains arose after the migration patterns were established, and they just continued on that ancestral route flying a bit higher each time!

They found a way forward



The geese now must reach altitudes between 16 to 20 thousand feet. One was documented at almost 24,000 feet. They air is quite thin at those altitudes, geese are not small and oxygen demand is great!

This article discusses the behavioral and physiological adaptations which allow such flights:
https://pmc.ncbi.nlm.nih.gov/articles/PMC4346704/

----
NB: I went to the French site linked to in the YT video. It was blocked by Web of Trust. So went no further. Your mileage may vary, I’m just overly cautious these days when visiting new sites