Bibern is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Bibern, Tscheppach, Brügglen, Aetingen, Aetigkofen, Gossliwil, Hessigkofen, Mühledorf, Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg. Wikipedia