Recently, scientists that were observing her said that killer whale has stopped carrying her dead newborn calf.
"Her tour of grief is now over and her behaviour is remarkably frisky," the Center for Whale Research said, as quoted by the BBC.
"Telephoto digital images taken from shore show that this mother whale appears to be in good physical condition," the Center for Whale Research added.
This killer whale is 20 years old, it lives in the Pacific Ocean near the American state of Washington and the Canadian province of British Columbia.
Such behavior is common among dolphins and whales, including killer whales, the Washington Center for the study of whales report said. However, the mother whale usually swims with her dead calves for less than a week.