Changes

Emperor Penguins are only faithful to their mate for the length of the breeding season. This is necessary, as it requires the undivided attention of both parents to raise a chick in such a hostile environment. However, once the breeding season is over, as few as 15% remain with the same breeding partner and, at times, this rate of fidelity can even drop as low as 5%.<ref>http://news.nationalgeographic.com/news/2005/08/0819_050819_march_penguins_2.html</ref>

Emperor Penguins are only faithful to their mate for the length of the breeding season. This is necessary, as it requires the undivided attention of both parents to raise a chick in such a hostile environment. However, once the breeding season is over, as few as 15% remain with the same breeding partner and, at times, this rate of fidelity can even drop as low as 5%.<ref>http://news.nationalgeographic.com/news/2005/08/0819_050819_march_penguins_2.html</ref>

Roy and Silo, two male birds in the penguin enclosure at New York's Central Park Zoo, built a nest, incubated an egg, and successfully raised a chick. They exhibited courting behaviour, built a nest together, and ignored all the advances from female penguins. When keepers gave them a fake egg to look after, they behaved like model parents. So, when another breeding pair stopped looking after one of their eggs, the keepers gave it to Roy and Silo who successfully hatched it and raised a chick called Tango. However, the following season Silo left Roy and mated with a female penguin named Scrappy who'd just transferred in from Sea World Zoo in San Diego. <ref> http://www.drthrockmorton.com/article.asp?id=164</ref>

Roy and Silo, two male [[homosexual]] birds in the penguin enclosure at New York's Central Park Zoo, built a nest, incubated an egg, and successfully raised a chick. They exhibited courting behaviour, built a nest together, and ignored all the advances from female penguins. When keepers gave them a fake egg to look after, they behaved like model parents. So, when another breeding pair stopped looking after one of their eggs, the keepers gave it to Roy and Silo who successfully hatched it and raised a chick called Tango. However, the following season Silo left Roy and mated with a female penguin named Scrappy who'd just transferred in from Sea World Zoo in San Diego. <ref> http://www.drthrockmorton.com/article.asp?id=164</ref>

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==References==