Bachman's Warbler (Vermivora bachmanii). Field Museum of Natural History, Chicago. Conservation status: critically endangered. There is very little remaining habitat to search and any remaining population that has managed to survive would be very small. The last confirmed sightings occurred in 1961 and 1988. In 2002, video footage that may show a female was shot in Cuba. V. bachmanii declined due to loss of its southern United States breeding grounds in bottomland forest through deforestation, drainage and stream channelization. The birds wintered primarily in Cuba, where habitat loss was especially severe. In addition, any small remnant population wintering in Cuba would be very vulnerable to the potentially catastrophic effects of hurricanes. ..As biologists describe new species and add to our understanding of the interrelated nature of life on Earth, a species becomes extinct every 20 minutes (100 to 1000 times the background extinction rate as seen in the fossil record). Collections in natural history museums play important roles in conservation, education and research. Most of that work and the associated specimens are not on public display in museums? typically, less than five percent of specimens are exhibited.