Are wingless creatures considered to be magically flying?

@JeremyECrawford Are wingless creatures (eg genies) considered to be magically flying? Or do they fall if restrained, for instance?

— Dan Dillon (@Dan_Dillon_1) September 9, 2016

A wingless creature is magically flying only if its stat block says so or if it uses magic like the fly spell #DnD https://t.co/IRn9dnGSdY

— Jeremy Crawford (@JeremyECrawford) September 9, 2016