A bearing support structure supporting the rotor shaft of a wind turbine, comprising: a housing including a first bearing seat located at a forward portion of the housing and a second bearing seat located rearward of the first bearing seat, the first and second bearing seats adapted to receive and support first and second bearings, respectively, that support a rotor shaft in rotation about an axis that extends between forward and rearward portions of the housing, characterised by: a first pair of lateral supports that extend generally downward from lateral sides of the housing and that are positioned toward the forward portion of the housing, said lateral supports supporting said housing, each of the first pair of lateral supports defining a mounting foot adapted to mount said housing to a base that receives the housing, wherein said mounting foot is separated from the other mounting foot of the first pair of lateral supports; and a structural gap defined between each of the pair of lateral supports and the first bearing seat, said structural gap allowing the first bearing seat to flex in regions near the interface with the lateral supports, wherein a lowermost portion of the first bearing seat has an increased stiffness relative to portions of the first bearing seat that are positioned laterally to the lowermost portion, and wherein the structural gaps are positioned between the lateral supports and the lower most portion of the first bearing seat. a housing including a first bearing seat located at a forward portion of the housing and a second bearing seat located rearward of the first bearing seat, the first and second bearing seats adapted to receive and support first and second bearings, respectively, that support a rotor shaft in rotation about an axis that extends between forward and rearward portions of the housing, characterised by: a first pair of lateral supports that extend generally downward from lateral sides of the housing and that are positioned toward the forward portion of the housing, said lateral supports supporting said housing, each of the first pair of lateral supports defining a mounting foot adapted to mount said housing to a base that receives the housing, wherein said mounting foot is separated from the other mounting foot of the first pair of lateral supports; and a structural gap defined between each of the pair of lateral supports and the first bearing seat, said structural gap allowing the first bearing seat to flex in regions near the interface with the lateral supports, a first pair of lateral supports that extend generally downward from lateral sides of the housing and that are positioned toward the forward portion of the housing, said lateral supports supporting said housing, each of the first pair of lateral supports defining a mounting foot adapted to mount said housing to a base that receives the housing, wherein said mounting foot is separated from the other mounting foot of the first pair of lateral supports; and a structural gap defined between each of the pair of lateral supports and the first bearing seat, said structural gap allowing the first bearing seat to flex in regions near the interface with the lateral supports, wherein a lowermost portion of the first bearing seat has an increased stiffness relative to portions of the first bearing seat that are positioned laterally to the lowermost portion, and wherein the structural gaps are positioned between the lateral supports and the lower most portion of the first bearing seat.