Yes - at height, they tend to move forwards rather than hovering in one spot to avoid getting stuck in a column of downwards moving air: https://en.wikipedia.or

Yes - at height, they tend to move forwards rather than hovering in one spot to avoid getting stuck in a column of downwards moving air: https://en.wikipedia.org/wiki/Vortex_ring_state https://en.wikipedia.org/wiki/Vortex_ring_state