From Andrew Sullivan's blog:
A famous avian same-sex couple - together for six years in an English zoo - have now adopted an abandoned flamingo chick. They are engaging in what the Vatican calls an "intrinsic evil." How does the Vatican know caring for and rearing a chick that might otherwise perish is evil? Because natural law says so. Meanwhile, nature seems to be ignoring the voice of God, as interpreted by the Pope. Time to excommunicate Planet Earth? Your Holiness, standards are slipping.