THE AIRPLANE IMPACTED TERRAIN WHILE EXECUTING A RIGHT TURN AT LOW ALTITUDE WHILE ON A PREDATOR CONTROL FLIGHT TO ERADICATE COYOTES FROM A SHEEP RANCH. THE WINDS IN THE AREA WERE REPORTED TO BE GUSTING TO 40 KNOTS AT THE TIME OF THE ACCIDENT. THE PILOT STATED THAT THE LEFT WING 'CAME UP' AND HE WAS UNABLE TO RECOVER PRIOR TO IMPACTING THE GROUND.