Nature in the City is a project of the Earth Island Institute, and is "wholly dedicated to ecological conservation, restoration and stewardship of the [San] Franciscan bioregion." Their website's "About" section gives a thorough explanation of not only their goals, as well as a definition of nature. Furthermore, this section provides some philosophical insight into what exactly "urban nature" happens to be. Those visitors interested in a more visceral tour of San Francisco should check out the "Photo Gallery" link, and they should be sure to check out the "Natural Areas" album to view some eerie-looking oak woodlands in Golden Gate Park. Additionally, visitors to the site who are interested in the life that teems on Alcatraz Island will enjoy file number fourteen which includes an image of roosting double-crested cormorants on a dramatic hillside. Finally the "Local Ecology" link has an explanation of the "Biodiversity Crisis" in San Francisco, which can be attributed to ecological, political, institutional, social and cultural factors.