#Lilleküla bird-name group and hoped for the best. See also #Sule and #Tiiva, they’re a bit iffy too. A #patagium is the skin used as gliding-mechanism by bats, flying-squirrels and whatnot (maybe umbrellas too?). But, yes, let’s call it a bird.
#Nature #Loodus
#Animals #Loomad
#Birds #Linnud
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Mysterious flying squirrel's patagium. I tried pinching patagium but I couldn't.

not vertical wrinkles but horizontal wrinkles?

モモンガの飛膜の謎

Mysterious flying squirrel's patagium.

#モモンガ #アメリカモモンガ
#リス科 #flyingsquirrel #patagium #squirrel

The #redtailedhawk is the only North American hawk with a #rufous tail & blackish #patagium marking on the leading edge of its wing. It soars with wings often in a slight #dihedral, flapping as little as possible to conserve energy. #Soaring is the most efficient flight method.