Same sex pair bonding is widespread, throughout the natural world. Zoos are not exactly the natural world. The animals live in unnaturally confined conditions, and are often maintained there for the specific purpose of boosting numbers, in formal breeding programs. Unless you have an objection in principle to the mere existence of zoos (I’m neutral on that one), it’s difficult to get seriously dogmatic about the story Guido and Detlef, the male vultures of Munster zoo – but it does raise some questions:
The drama began in March when Guido and Detlef set up home together at the Allwetterzoo, in the British Army garrison town of Munster, northwest Germany.
The griffon vultures, Gyps fulvus, showed no interest in female company. They were happy in their own world, grooming one another with tender sweeps of their savage beaks between rearranging the sticks that made up their nest, although the other vultures kept stealing materials as if to spite their arrangement.
Dirk Wewers, the zoo’s curator, said: “They always sat so closely together. They defended their nest from the other vultures. A suitable female was missing and in such a case vultures look for companionship from the next best thing, even if it is a male. Detlef looked for a bird of the opposite sex but settled with Guido.”