LOS ANGELES (Reuters) - Fergie, the singer of pop-rap group the Black Eyed Peas, has given birth to a boy in Los Angeles on Thursday, a representative for her actor-husband Josh Duhamel said. Axl Jack Duhamel weighed 7 lb and 10 ounces (3.5 kg), Duhamel spokeswoman Ruth Bernstein said. It is the first child for both Fergie, who recently changed her first name from Stacy to her stage name, and Duhamel. Fergie, 38, rose to prominence when her addition to the Black Eyed Peas lineup coincided with a string of breakout hits for the group from their 2003 album "Elephunk. ...