There‘s an amazing official video from RSPB Reserve Saltholme of an overhead aerial view of that reserve from a drone. It‘s an video from Saltholme as it’s from the Saltholme YouTube videos of which I get reminders when there’s a new video from Saltholme. To access the video from YouTube, Google and type out, Saltholme-Wet grassland from the air. I’m not sure how to give the links on these forums.