Northumbrian Water added. The Project Kingfisher trial was a "world first" for the water industry, the firm said, and was named after the way the aircraft hover and dip in and out of water.

Learn to identify a belted kingfisher. See what the male and female look like, find out what the bird eats, and hear its call ...

Before leaving, 10 whooper swans, necks outstretched came into view, honking, descending low to fly in a line just metres ...