(Seattle, WA)  --  Whale researchers are playing the waiting game after attempting to feed live chinook salmon to a starving southern resident orca.  The Seattle Times reports federal scientists from the National Oceanic and Atmospheric Administration performed the feeding Sunday for the young orca named J50.  The scientists say the results of the feeding were inconclusive, and it's not clear whether J50 ate any of the fish.  The live fish were put into the water using a tube that exited below the water's surface just in front of J50.  Researchers say J50 and the rest of the J pod were seen heading toward Canadian waters yesterday, and scientists will try to take another look at her if and when she returns to Washington later this week.