This photo of a Mute Swan and the first day in the water for the cygnets was taken at Heriot Watt University, Edinburgh during May 2012.
The technical information is as follows.
Camera - Canon EOS 5D Mk II
Shutter speed - 1/1000
Aperture - f9.0
Lens - Canon EF 400mm f5.6 L USM
Focal Length - 400mm
ISO - 800
Copyright © Tom Gilland