Natural wonder: Wing 'clap' solves mystery of butterfly flight
The cupped clap of a butterfly's wings may be the key to their flying abilities and their survival.
from BBC News - World https://ift.tt/3qAugSH
https://ift.tt/3qAugSH
from BBC News - World https://ift.tt/3qAugSH
https://ift.tt/3qAugSH
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