Biologists spotted a new calf among the endangered southern resident orca pods this week, a hopeful sign tempered by the apparent disappearance of another calf born earlier this year. Calf L130 was seen for the first time Sunday traveling with the female L91 near East Sooke, B.C., by Center for Whale Research biologists, who estimated the young whale was between one and three months old. Michael Weiss, research director for the center, described…