New calf born to endangered southern resident orcas

SEATTLE (AP) — A new calf was born to J pod of the southern resident orcas, an endangered population of killer whales. The Seattle Times reports that Center for Whale Research director Ken Balcomb confirmed the birth Tuesday. But the birth to orca mother J37 was mixed  with news of the loss of two other pregnancies in southern resident families. The endangered whales’ population is now 74. The southern residents face at least three main threats to their survival: Underwater noise, pollutants, and lack of adequate Chinook salmon, their primary food source. Southern Resident orcas have been listed as an endangered species in the U.S. and Canada.