Six gay penguins at a German zoo are still refusing to mate with females of the species flown in from Sweden in 2005, the zoo said. The problem was that the female Humboldt penguins have proven too shy in their advances, the director of the zoo in the northern port city of Bremerhaven said. "The Swedes will not make the first move," Heike Kueck said. The females were flown in last year in a bid to bring the males to mate and help save the Humboldt species from extinction. Kueck said last year she was optimistic the initiative would be...