Nearly 100 species of swift are completely adapted to life in the air. That is the conclusion of researchers after having studied a third species and observing that some individuals did not land for over three months.
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2019/03/190306110651.htm
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2019/03/190306110651.htm
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