The island of Madagascar has some of the greatest biodiversity on the planet. The list of endemic species is extraordinary: 97% of animals are unique to the island. Its dwindling forests are home to half the world's chameleon varieties, 300 species of butterfly, 28 kinds of bat, 150 types of frog and 260 different reptiles. Unique to Madagascar too are more than 50 types of lemurs and the half of its 201 resident bird species. In 2007 six of the national parks were voted in as a joint World Heritage Site under the name Rainforests of the Atsinanana. These six are: Marojejy, Masoala, Ranomafana, Zahamena, Andohahela and Andringitra National Park.