Mosquitoes fly in the dark against the background of the moonMosquitoes fly in the dark against the background of the moon
White pigeon on the background of the sky and cloudsWhite pigeon on the background of the sky and clouds
A plane and there's another small plane on top of itA plane and there's another small plane on top of it
То же, что лететь (в 1 знач., но обозначает движение, совершающееся в разное время, в разных направлениях).