Two of three mountain lion kittens being recorded by researchers at a preserve in Sonoma County have survived to four months. The Audubon Canyon Ranch research team videotaped two of the kittens from a distance earlier this year when they were 10 days old. The den was found in the Glen Ellen-Kenwood area of Sonoma County. The cubs are the first offspring found as part of the study. Now the kittens are four months old.