pbr Sydney's premier zoo is celebrating the birth of its first female Asian elephant.br ppbr The 270 pound calf is reported to be doing well.br ppbr Taronga Zoo director Cameron Kerr said in a statement that the birth means that Australia now has a dozen of the endangered animals in zoos in Sydney and Melbourne, after initially receiving eight from Thailand in 2006.br ppbr The newborn, which has yet to be named, is the third born in the Sydney zoo and the first female.br ppbr The zoo says the calf was suckling within two hours of birth and walking unassisted within three hours.