Falling damage if flying creature hits the ground, correct? What if the creature can hover?

@Gutzindaffer @JeremyECrawfordEarthbind – falling damage if flying creature hits the ground, correct? What if the creature can hover? yes, falling damage. hover creature falls, too (can't fly at speed 0)

— (((Mike Mearls))) (@mikemearls) July 12, 2016