''Z and Vielpunkt, both males, gladly accepted their 'Easter gift' and got straight down to raising it.... Since the chick arrived, they have been behaving just as you would expect a heterosexual couple to do. The two happy fathers spend their days attentively protecting, caring for and feeding their adopted offspring.... Homosexuality is nothing unusual among animals.''

Officials at the Bremerhaven zoo in northern Germany discussing the successful hatch of a baby penguin by a pair of male Humboldt penguins. In the United States a book children's book, ''And Tango Makes Three,'' about another chick hatched by a pair of male penguins in the New York Zoo, has maintained its title of ''Most Frequently Challeged'' book for three years in a row. (BBC News)