Why are geese flocking to a North East nature reserve?

Others, however, aren't so complimentary when their sleep is disturbed as they noisily fly over their rooftops in formation. For motorists using the A690 between Sunderland and Durham and people in Houghton-le-Spring, the Raintons and villages west of Durham, greylag geese are a common sight - and sound - at this time of year.