Place: Wrest Park, Bedfordshire
Date: 26 October 2013.
Place: Tredegar House, Newport, South Wales
Date: 9 May 2015.
Place: Somerset Levels
Date: 10 March 2013.
Place: Salthouse, Norfolk
Date: 29 August 2015.
Place: Audley End House, Saffron Walden, Essex
Date: 27 October 2013.
[Cygnus olor, Family Anatidae, Order Anseriformes, Wikipedia Entry: Mute swan]
The sound of the mute swan (borrowed from the Xeno-Canto website, recordist Fraser Simpson)
Distribution of the mute swan across the British Isles (borrowed from the Bird Atlas Mapstore).