Changes

'''Roy and Silo''' are  male [[penguin]]s at the Central Park Zoo in [[Manhattan]].<ref name=CPZGPID>[http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2004/02/07/MNG3N4RAV41.DTL Central Park Zoo's gay penguins ignite debate]</ref> They are chinstrap penguins.<ref name=NYT>[http://query.nytimes.com/gst/fullpage.html?res=9506efd9113bf934a35751c0a9629c8b63 Love That Dare Not Squeak Its Name] ''[[New York Times]]''</ref> According to the National Geographic News,<ref>[http://news.nationalgeographic.com/news/2004/07/0722_040722_gayanimal.html Homosexual Activity Among Animals Stirs Debate] ''National Geographic News''</ref>

'''Roy and Silo''' are  male [[penguin]]s at the Central Park Zoo in [[Manhattan]].<ref name=CPZGPID>[http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2004/02/07/MNG3N4RAV41.DTL Central Park Zoo's gay penguins ignite debate]</ref> They are chinstrap penguins.<ref name=NYT>[http://query.nytimes.com/gst/fullpage.html?res=9506efd9113bf934a35751c0a9629c8b63 Love That Dare Not Squeak Its Name] ''[[New York Times]]''</ref> According to the National Geographic News,<ref>[http://news.nationalgeographic.com/news/2004/07/0722_040722_gayanimal.html Homosexual Activity Among Animals Stirs Debate] ''National Geographic News''</ref>

{{cquote|Roy and Silo, two male chinstrap penguins at New York's Central Park Zoo have been inseparable for six years now. They display classic pair-bonding behavior—entwining of necks, mutual preening, flipper flapping, and the rest. They also have sex, while ignoring potential female mates.}}

{{cquote|Roy and Silo, two male chinstrap penguins at New York's Central Park Zoo have been inseparable for six years now. They display classic pair-bonding behavior—entwining of necks, mutual preening, flipper flapping, and the rest. }}

They were offered companionship of female penguins, they refused it. According to the chief keeper of the penguins Rob Gramzay, once both of them were so desperate to incubate an [[egg]] together that they used a rock as an egg and sat on it. In this way they the rock warm in the folds of their abdomen. After Gramzay gave them an egg, they incubated it and a chick named Tango was born. They also helped raising Tango.<ref name=CPZGPID/>

They were offered companionship of female penguins, they refused it. According to the chief keeper of the penguins Rob Gramzay, once both of them were so desperate to incubate an [[egg]] together that they used a rock as an egg and sat on it. In this way they the rock warm in the folds of their abdomen. After Gramzay gave them an egg, they incubated it and a chick named Tango was born. They also helped raising Tango.<ref name=CPZGPID/>