An anonymous reader writes: On September 1, 1914, Martha, the last passenger pigeon was found dead in her aviary at the Cincinnati Zoo. When the first European settlers arrived in North America at least one of every four birds on the continent was a passenger pigeon, making them the most numerous birds in North America, and perhaps in the world. From the article: "But extinction apparently doesn’t ring with the finality it used to. Researchers are working to 'de-extinct' the bird. They got their hands on some of the 1,500 or so known passenger pigeon specimens and are hoping to resurrect the species through some Jurassic Park-like genetic engineering. Instead of using frog DNA to fill out the missing parts of a dinosaur’s genetic code as in Michael Crichton’s story, the real-life 'bring-back-the-passenger pigeon' researchers are using the bird’s closest relative, the band-tailed pigeon.