Greylag Goose
Anser anser

Greylags are the most common of the grey geese to visit Britain. They can often be quite tame and as such, they are the ancestors of the domestic goose.
 

  

  

1: Strathclyde Country Park, 11/06/2005.
2-3: Hogganfield Loch, Glasgow, 22/06/2005.
4: Reading, 31/07/2006.