In an effort to protect the reef, the BVI government has made anchoring on Horseshoe Reef illegal. Fauna Anegada is also known for the large salt ponds that cover much of the west end of the island, These ponds, which support unique fauna, were designated a Ramsar Site on 11 May 1999. In the 1830s, thousands of Caribbean flamingos lived in these ponds, but they were hunted for food and feathers throughout the 19th and early 20th centuries and disappeared by 1950. They have been reestablished. As of 2016, the flamingo flock numbers approximately 200 birds. The birds are another tourist draw, but officials are trying to keep the number of visitors to the flamingo areas at a level that allows the birds to flourish. The western salt ponds and south-eastern coastal mangroves have been recognised as an Important Bird Area (IBA) by BirdLife International. Other rare or endangered animals include the Anegada rock iguana (Cyclura pinguis) and several species of turtles. Conch, Caribbean lobster (Metanephrops binghami), and many species of fishes can be found near Anegada, particularly in the deep waters off the North Drop to the north of the island. The Ft. Worth Zoo now maintains an Anegada Rock "Headstart" facility in the Settlement. Newly hatched iguanas are caught in the wild, brought to the facility, and raised until they are large enough to be able to defend themselves against the feral cats that are their only predator on Anegada. As of 2016, over 200 iguanas have been released from the headstart program back into the wild. In addition, an annual Iguana Festival is held outside the Iguana Headstart Facility to celebrate the island's native species. The reef adjacent to the Settlement was once one of the more fertile conch grounds in the Caribbean, but overfishing has wiped out the conch population there. Visitors to the settlement are greeted by the sight of mountains of empty conch shells on the shore when they arrive. There are also populations of feral cattle, donkeys, goats, cows, and sheep that live in all areas of the island. Hurricanes Anegadians traditionally endured hurricanes by tying their dories to the trunks of mangroves with rope and covering with a tarp. Today, given sufficient warning, few leave the island and go to Tortola until after the storm passes. On 30 August 2010, the eye of Hurricane Earl passed north of Anegada at category 4,