(Seattle, WA)  --  Another southern resident appears to be sick.  Researchers with the National Oceanic and Atmospheric Administration say the killer whale K25 is looking thin and could be struggling to get enough food.  However, researchers say he's not as thin as J50, who was declared dead earlier this month after months of being monitored.  Researchers had some good news, too, saying that at least three orcas are pregnant.  However, researchers say those pregnancies may not come to term, as there's been a high rate of reproductive failure within the southern resident orcas in recent years.