(Seattle, WA)  --  The federal government is putting together an emergency response to help save an ailing four-year-old southern resident orca whale.  The National Oceanic and Atmospheric Administration is putting together a plan that includes feeding the young whale named J50 live chinook salmon dosed with medicine.  The starving whale has lost 20-percent of her body weight, and researchers believe she may be suffering from an infection as well.  Meanwhile, researchers continue to monitor the mourning mother whale J35, also known as Tahlequah, who continued carrying her dead child on her head yesterday for a tenth straight day.  Tahlequah has been clinging to the calf since it died July 24th, just half an hour after being born.