Common Terns Sterna Hirundo. Black and White birds with Red Beak. Main staple diet is fish and generally dive for the fish. These birds require a certain skill to photograph as they fly and move quickly and often change directions. The birds rarely, in my experience, come near to people. They do, in some cases, have a pattern of behaviour which can be predictable which will allow you to get some degree of success in getting some amazing images.
The Common Terns can be found in locations with large body of water. RSPB Rye Meads is one such locations where these birds can be found.
Aperture: F/5.6 to F/8.0
Shutter Speed: 1/1600th. However, slower speeds can achieve some read results.
ISO: 100-1600. Higher ISO can be used if the camera is able to handle the noise accordingly.
Metering: Evaluative or Centre Weighted.
Clothing: This will depend on location.